Merge tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:
   - Use pci_find_vsec_capability() instead of open-coding it (Andy
     Shevchenko)
   - Convert pci_dev_present() stub from macro to static inline to avoid
     'unused variable' errors (Hans de Goede)
   - Convert sysfs slot attributes from default_attrs to default_groups
     (Greg Kroah-Hartman)
   - Use DWORD accesses for LTR, L1 SS to avoid BayHub OZ711LV2 erratum
     (Rajat Jain)
   - Remove unnecessary initialization of static variables (Longji Guo)

  Resource management:
   - Always write Intel I210 ROM BAR on update to work around device
     defect (Bjorn Helgaas)

  PCIe native device hotplug:
   - Fix pciehp lockdep errors on Thunderbolt undock (Hans de Goede)
   - Fix infinite loop in pciehp IRQ handler on power fault (Lukas
     Wunner)

  Power management:
   - Convert amd64-agp, sis-agp, via-agp from legacy PCI power
     management to generic power management (Vaibhav Gupta)

  IOMMU:
   - Add function 1 DMA alias quirk for Marvell 88SE9125 SATA controller
     so it can work with an IOMMU (Yifeng Li)

  Error handling:
   - Add PCI_ERROR_RESPONSE and related definitions for signaling and
     checking for transaction errors on PCI (Naveen Naidu)
   - Fabricate PCI_ERROR_RESPONSE data (~0) in config read wrappers,
     instead of in host controller drivers, when transactions fail on
     PCI (Naveen Naidu)
   - Use PCI_POSSIBLE_ERROR() to check for possible failure of config
     reads (Naveen Naidu)

  Peer-to-peer DMA:
   - Add Logan Gunthorpe as P2PDMA maintainer (Bjorn Helgaas)

  ASPM:
   - Calculate link L0s and L1 exit latencies when needed instead of
     caching them (Saheed O. Bolarinwa)
   - Calculate device L0s and L1 acceptable exit latencies when needed
     instead of caching them (Saheed O. Bolarinwa)
   - Remove struct aspm_latency since it's no longer needed (Saheed O.
     Bolarinwa)

  APM X-Gene PCIe controller driver:
   - Fix IB window setup, which was broken by the fact that IB resources
     are now sorted in address order instead of DT dma-ranges order (Rob
     Herring)

  Apple PCIe controller driver:
   - Enable clock gating to save power (Hector Martin)
   - Fix REFCLK1 enable/poll logic (Hector Martin)

  Broadcom STB PCIe controller driver:
   - Declare bitmap correctly for use by bitmap interfaces (Christophe
     JAILLET)
   - Clean up computation of legacy and non-legacy MSI bitmasks (Florian
     Fainelli)
   - Update suspend/resume/remove error handling to warn about errors
     and not fail the operation (Jim Quinlan)
   - Correct the "pcie" and "msi" interrupt descriptions in DT binding
     (Jim Quinlan)
   - Add DT bindings for endpoint voltage regulators (Jim Quinlan)
   - Split brcm_pcie_setup() into two functions (Jim Quinlan)
   - Add mechanism for turning on voltage regulators for connected
     devices (Jim Quinlan)
   - Turn voltage regulators for connected devices on/off when bus is
     added or removed (Jim Quinlan)
   - When suspending, don't turn off voltage regulators for wakeup
     devices (Jim Quinlan)

  Freescale i.MX6 PCIe controller driver:
   - Add i.MX8MM support (Richard Zhu)

  Freescale Layerscape PCIe controller driver:
   - Use DWC common ops instead of layerscape-specific link-up functions
     (Hou Zhiqiang)

  Intel VMD host bridge driver:
   - Honor platform ACPI _OSC feature negotiation for Root Ports below
     VMD (Kai-Heng Feng)
   - Add support for Raptor Lake SKUs (Karthik L Gopalakrishnan)
   - Reset everything below VMD before enumerating to work around
     failure to enumerate NVMe devices when guest OS reboots (Nirmal
     Patel)

  Bridge emulation (used by Marvell Aardvark and MVEBU):
   - Make emulated ROM BAR read-only by default (Pali Rohár)
   - Make some emulated legacy PCI bits read-only for PCIe devices (Pali
     Rohár)
   - Update reserved bits in emulated PCIe Capability (Pali Rohár)
   - Allow drivers to emulate different PCIe Capability versions (Pali
     Rohár)
   - Set emulated Capabilities List bit for all PCIe devices, since they
     must have at least a PCIe Capability (Pali Rohár)

  Marvell Aardvark PCIe controller driver:
   - Add bridge emulation definitions for PCIe DEVCAP2, DEVCTL2,
     DEVSTA2, LNKCAP2, LNKCTL2, LNKSTA2, SLTCAP2, SLTCTL2, SLTSTA2 (Pali
     Rohár)
   - Add aardvark support for DEVCAP2, DEVCTL2, LNKCAP2 and LNKCTL2
     registers (Pali Rohár)
   - Clear all MSIs at setup to avoid spurious interrupts (Pali Rohár)
   - Disable bus mastering when unbinding host controller driver (Pali
     Rohár)
   - Mask all interrupts when unbinding host controller driver (Pali
     Rohár)
   - Fix memory leak in host controller unbind (Pali Rohár)
   - Assert PERST# when unbinding host controller driver (Pali Rohár)
   - Disable link training when unbinding host controller driver (Pali
     Rohár)
   - Disable common PHY when unbinding host controller driver (Pali
     Rohár)
   - Fix resource type checking to check only IORESOURCE_MEM, not
     IORESOURCE_MEM_64, which is a flavor of IORESOURCE_MEM (Pali Rohár)

  Marvell MVEBU PCIe controller driver:
   - Implement pci_remap_iospace() for ARM so mvebu can use
     devm_pci_remap_iospace() instead of the previous ARM-specific
     pci_ioremap_io() interface (Pali Rohár)
   - Use the standard pci_host_probe() instead of the device-specific
     mvebu_pci_host_probe() (Pali Rohár)
   - Replace all uses of ARM-specific pci_ioremap_io() with the ARM
     implementation of the standard pci_remap_iospace() interface and
     remove pci_ioremap_io() (Pali Rohár)
   - Skip initializing invalid Root Ports (Pali Rohár)
   - Check for errors from pci_bridge_emul_init() (Pali Rohár)
   - Ignore any bridges at non-zero function numbers (Pali Rohár)
   - Return ~0 data for invalid config read size (Pali Rohár)
   - Disallow mapping interrupts on emulated bridges (Pali Rohár)
   - Clear Root Port Memory & I/O Space Enable and Bus Master Enable at
     initialization (Pali Rohár)
   - Make type bits in Root Port I/O Base register read-only (Pali
     Rohár)
   - Disable Root Port windows when base/limit set to invalid values
     (Pali Rohár)
   - Set controller to Root Complex mode (Pali Rohár)
   - Set Root Port Class Code to PCI Bridge (Pali Rohár)
   - Update emulated Root Port secondary bus numbers to better reflect
     the actual topology (Pali Rohár)
   - Add PCI_BRIDGE_CTL_BUS_RESET support to emulated Root Ports so
     pci_reset_secondary_bus() can reset connected devices (Pali Rohár)
   - Add PCI_EXP_DEVCTL Error Reporting Enable support to emulated Root
     Ports (Pali Rohár)
   - Add PCI_EXP_RTSTA PME Status bit support to emulated Root Ports
     (Pali Rohár)
   - Add DEVCAP2, DEVCTL2 and LNKCTL2 support to emulated Root Ports on
     Armada XP and newer devices (Pali Rohár)
   - Export mvebu-mbus.c symbols to allow pci-mvebu.c to be a module
     (Pali Rohár)
   - Add support for compiling as a module (Pali Rohár)

  MediaTek PCIe controller driver:
   - Assert PERST# for 100ms to allow power and clock to stabilize
     (qizhong cheng)

  MediaTek PCIe Gen3 controller driver:
   - Disable Mediatek DVFSRC voltage request since lack of DVFSRC to
     respond to the request causes failure to exit L1 PM Substate
     (Jianjun Wang)

  MediaTek MT7621 PCIe controller driver:
   - Declare mt7621_pci_ops static (Sergio Paracuellos)
   - Give pcibios_root_bridge_prepare() access to host bridge windows
     (Sergio Paracuellos)
   - Move MIPS I/O coherency unit setup from driver to
     pcibios_root_bridge_prepare() (Sergio Paracuellos)
   - Add missing MODULE_LICENSE() (Sergio Paracuellos)
   - Allow COMPILE_TEST for all arches (Sergio Paracuellos)

  Microsoft Hyper-V host bridge driver:
   - Add hv-internal interfaces to encapsulate arch IRQ dependencies
     (Sunil Muthuswamy)
   - Add arm64 Hyper-V vPCI support (Sunil Muthuswamy)

  Qualcomm PCIe controller driver:
   - Undo PM setup in qcom_pcie_probe() error handling path (Christophe
     JAILLET)
   - Use __be16 type to store return value from cpu_to_be16()
     (Manivannan Sadhasivam)
   - Constify static dw_pcie_ep_ops (Rikard Falkeborn)

  Renesas R-Car PCIe controller driver:
   - Fix aarch32 abort handler so it doesn't check the wrong bus clock
     before accessing the host controller (Marek Vasut)

  TI Keystone PCIe controller driver:
   - Add register offset for ti,syscon-pcie-id and ti,syscon-pcie-mode
     DT properties (Kishon Vijay Abraham I)

  MicroSemi Switchtec management driver:
   - Add Gen4 automotive device IDs (Kelvin Cao)
   - Declare state_names[] as static so it's not allocated and
     initialized for every call (Kelvin Cao)

  Host controller driver cleanups:
   - Use of_device_get_match_data(), not of_match_device(), when we only
     need the device data in altera, artpec6, cadence, designware-plat,
     dra7xx, keystone, kirin (Fan Fei)
   - Drop pointless of_device_get_match_data() cast in j721e (Bjorn
     Helgaas)
   - Drop redundant struct device * from j721e since struct cdns_pcie
     already has one (Bjorn Helgaas)
   - Rename driver structs to *_pcie in intel-gw, iproc, ls-gen4,
     mediatek-gen3, microchip, mt7621, rcar-gen2, tegra194, uniphier,
     xgene, xilinx, xilinx-cpm for consistency across drivers (Fan Fei)
   - Fix invalid address space conversions in hisi, spear13xx (Bjorn
     Helgaas)

  Miscellaneous:
   - Sort Intel Device IDs by value (Andy Shevchenko)
   - Change Capability offsets to hex to match spec (Baruch Siach)
   - Correct misspellings (Krzysztof Wilczyński)
   - Terminate statement with semicolon in pci_endpoint_test.c (Ming
     Wang)"

* tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (151 commits)
  PCI: mt7621: Allow COMPILE_TEST for all arches
  PCI: mt7621: Add missing MODULE_LICENSE()
  PCI: mt7621: Move MIPS setup to pcibios_root_bridge_prepare()
  PCI: Let pcibios_root_bridge_prepare() access bridge->windows
  PCI: mt7621: Declare mt7621_pci_ops static
  PCI: brcmstb: Do not turn off WOL regulators on suspend
  PCI: brcmstb: Add control of subdevice voltage regulators
  PCI: brcmstb: Add mechanism to turn on subdev regulators
  PCI: brcmstb: Split brcm_pcie_setup() into two funcs
  dt-bindings: PCI: Add bindings for Brcmstb EP voltage regulators
  dt-bindings: PCI: Correct brcmstb interrupts, interrupt-map.
  PCI: brcmstb: Fix function return value handling
  PCI: brcmstb: Do not use __GENMASK
  PCI: brcmstb: Declare 'used' as bitmap, not unsigned long
  PCI: hv: Add arm64 Hyper-V vPCI support
  PCI: hv: Make the code arch neutral by adding arch specific interfaces
  PCI: pciehp: Use down_read/write_nested(reset_lock) to fix lockdep errors
  x86/PCI: Remove initialization of static variables to false
  PCI: Use DWORD accesses for LTR, L1 SS to avoid erratum
  misc: pci_endpoint_test: Terminate statement with semicolon
  ...

74 files changed, 2334 insertions, 1575 deletions

diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index ea0424922de7..db612045616f 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -914,6 +914,7 @@ int mvebu_mbus_add_window_remap_by_id(unsigned int target,
 
 	return mvebu_mbus_alloc_window(s, base, size, remap, target, attribute);
 }
+EXPORT_SYMBOL_GPL(mvebu_mbus_add_window_remap_by_id);
 
 int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
 				phys_addr_t base, size_t size)
@@ -921,6 +922,7 @@ int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
 	return mvebu_mbus_add_window_remap_by_id(target, attribute, base,
 						 size, MVEBU_MBUS_NO_REMAP);
 }
+EXPORT_SYMBOL_GPL(mvebu_mbus_add_window_by_id);
 
 int mvebu_mbus_del_window(phys_addr_t base, size_t size)
 {
@@ -933,6 +935,7 @@ int mvebu_mbus_del_window(phys_addr_t base, size_t size)
 	mvebu_mbus_disable_window(&mbus_state, win);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mvebu_mbus_del_window);
 
 void mvebu_mbus_get_pcie_mem_aperture(struct resource *res)
 {
@@ -940,6 +943,7 @@ void mvebu_mbus_get_pcie_mem_aperture(struct resource *res)
 		return;
 	*res = mbus_state.pcie_mem_aperture;
 }
+EXPORT_SYMBOL_GPL(mvebu_mbus_get_pcie_mem_aperture);
 
 void mvebu_mbus_get_pcie_io_aperture(struct resource *res)
 {
@@ -947,6 +951,7 @@ void mvebu_mbus_get_pcie_io_aperture(struct resource *res)
 		return;
 	*res = mbus_state.pcie_io_aperture;
 }
+EXPORT_SYMBOL_GPL(mvebu_mbus_get_pcie_io_aperture);
 
 int mvebu_mbus_get_dram_win_info(phys_addr_t phyaddr, u8 *target, u8 *attr)
 {
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index b40edae32817..dc78a4fb879e 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -588,20 +588,11 @@ static void agp_amd64_remove(struct pci_dev *pdev)
 	agp_bridges_found--;
 }
 
-#ifdef CONFIG_PM
+#define agp_amd64_suspend NULL
 
-static int agp_amd64_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused agp_amd64_resume(struct device *dev)
 {
-	pci_save_state(pdev);
-	pci_set_power_state(pdev, pci_choose_state(pdev, state));
-
-	return 0;
-}
-
-static int agp_amd64_resume(struct pci_dev *pdev)
-{
-	pci_set_power_state(pdev, PCI_D0);
-	pci_restore_state(pdev);
+	struct pci_dev *pdev = to_pci_dev(dev);
 
 	if (pdev->vendor == PCI_VENDOR_ID_NVIDIA)
 		nforce3_agp_init(pdev);
@@ -609,8 +600,6 @@ static int agp_amd64_resume(struct pci_dev *pdev)
 	return amd_8151_configure();
 }
 
-#endif /* CONFIG_PM */
-
 static const struct pci_device_id agp_amd64_pci_table[] = {
 	{
 	.class		= (PCI_CLASS_BRIDGE_HOST << 8),
@@ -738,15 +727,14 @@ static const struct pci_device_id agp_amd64_pci_promisc_table[] = {
 	{ }
 };
 
+static SIMPLE_DEV_PM_OPS(agp_amd64_pm_ops, agp_amd64_suspend, agp_amd64_resume);
+
 static struct pci_driver agp_amd64_pci_driver = {
 	.name		= "agpgart-amd64",
 	.id_table	= agp_amd64_pci_table,
 	.probe		= agp_amd64_probe,
 	.remove		= agp_amd64_remove,
-#ifdef CONFIG_PM
-	.suspend	= agp_amd64_suspend,
-	.resume		= agp_amd64_resume,
-#endif
+	.driver.pm  = &agp_amd64_pm_ops,
 };
 
 
diff --git a/drivers/char/agp/sis-agp.c b/drivers/char/agp/sis-agp.c
index 14909fc5d767..f8a02f4bef1b 100644
--- a/drivers/char/agp/sis-agp.c
+++ b/drivers/char/agp/sis-agp.c
@@ -217,26 +217,14 @@ static void agp_sis_remove(struct pci_dev *pdev)
 	agp_put_bridge(bridge);
 }
 
-#ifdef CONFIG_PM
+#define agp_sis_suspend NULL
 
-static int agp_sis_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused agp_sis_resume(
+	__attribute__((unused)) struct device *dev)
 {
-	pci_save_state(pdev);
-	pci_set_power_state(pdev, pci_choose_state(pdev, state));
-
-	return 0;
-}
-
-static int agp_sis_resume(struct pci_dev *pdev)
-{
-	pci_set_power_state(pdev, PCI_D0);
-	pci_restore_state(pdev);
-
 	return sis_driver.configure();
 }
 
-#endif /* CONFIG_PM */
-
 static const struct pci_device_id agp_sis_pci_table[] = {
 	{
 		.class		= (PCI_CLASS_BRIDGE_HOST << 8),
@@ -419,15 +407,14 @@ static const struct pci_device_id agp_sis_pci_table[] = {
 
 MODULE_DEVICE_TABLE(pci, agp_sis_pci_table);
 
+static SIMPLE_DEV_PM_OPS(agp_sis_pm_ops, agp_sis_suspend, agp_sis_resume);
+
 static struct pci_driver agp_sis_pci_driver = {
 	.name		= "agpgart-sis",
 	.id_table	= agp_sis_pci_table,
 	.probe		= agp_sis_probe,
 	.remove		= agp_sis_remove,
-#ifdef CONFIG_PM
-	.suspend	= agp_sis_suspend,
-	.resume		= agp_sis_resume,
-#endif
+	.driver.pm      = &agp_sis_pm_ops,
 };
 
 static int __init agp_sis_init(void)
diff --git a/drivers/char/agp/via-agp.c b/drivers/char/agp/via-agp.c
index 87a92a044570..a460ae352772 100644
--- a/drivers/char/agp/via-agp.c
+++ b/drivers/char/agp/via-agp.c
@@ -492,22 +492,11 @@ static void agp_via_remove(struct pci_dev *pdev)
 	agp_put_bridge(bridge);
 }
 
-#ifdef CONFIG_PM
+#define agp_via_suspend NULL
 
-static int agp_via_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused agp_via_resume(struct device *dev)
 {
-	pci_save_state (pdev);
-	pci_set_power_state (pdev, PCI_D3hot);
-
-	return 0;
-}
-
-static int agp_via_resume(struct pci_dev *pdev)
-{
-	struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
-
-	pci_set_power_state (pdev, PCI_D0);
-	pci_restore_state(pdev);
+	struct agp_bridge_data *bridge = dev_get_drvdata(dev);
 
 	if (bridge->driver == &via_agp3_driver)
 		return via_configure_agp3();
@@ -517,8 +506,6 @@ static int agp_via_resume(struct pci_dev *pdev)
 	return 0;
 }
 
-#endif /* CONFIG_PM */
-
 /* must be the same order as name table above */
 static const struct pci_device_id agp_via_pci_table[] = {
 #define ID(x) \
@@ -567,16 +554,14 @@ static const struct pci_device_id agp_via_pci_table[] = {
 
 MODULE_DEVICE_TABLE(pci, agp_via_pci_table);
 
+static SIMPLE_DEV_PM_OPS(agp_via_pm_ops, agp_via_suspend, agp_via_resume);
 
 static struct pci_driver agp_via_pci_driver = {
 	.name		= "agpgart-via",
 	.id_table	= agp_via_pci_table,
 	.probe		= agp_via_probe,
 	.remove		= agp_via_remove,
-#ifdef CONFIG_PM
-	.suspend	= agp_via_suspend,
-	.resume		= agp_via_resume,
-#endif
+	.driver.pm      = &agp_via_pm_ops,
 };
 
 
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 2ed7e3aaff3a..8f786a225dcf 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -865,7 +865,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
 		goto err_release_irq;
 	}
 	misc_device->parent = &pdev->dev;
-	misc_device->fops = &pci_endpoint_test_fops,
+	misc_device->fops = &pci_endpoint_test_fops;
 
 	err = misc_register(misc_device);
 	if (err) {
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 43e615aa12ff..d98fafdd0f99 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -184,7 +184,7 @@ config PCI_LABEL
 
 config PCI_HYPERV
 	tristate "Hyper-V PCI Frontend"
-	depends on X86_64 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && SYSFS
+	depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && SYSFS
 	select PCI_HYPERV_INTERFACE
 	help
 	  The PCI device frontend driver allows the kernel to import arbitrary
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 46935695cfb9..0d9f6b21babb 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -42,7 +42,10 @@ int noinline pci_bus_read_config_##size \
 	if (PCI_##size##_BAD) return PCIBIOS_BAD_REGISTER_NUMBER;	\
 	pci_lock_config(flags);						\
 	res = bus->ops->read(bus, devfn, pos, len, &data);		\
-	*value = (type)data;						\
+	if (res)							\
+		PCI_SET_ERROR_RESPONSE(value);				\
+	else								\
+		*value = (type)data;					\
 	pci_unlock_config(flags);					\
 	return res;							\
 }
@@ -80,10 +83,8 @@ int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn,
 	void __iomem *addr;
 
 	addr = bus->ops->map_bus(bus, devfn, where);
-	if (!addr) {
-		*val = ~0;
+	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	if (size == 1)
 		*val = readb(addr);
@@ -122,10 +123,8 @@ int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn,
 	void __iomem *addr;
 
 	addr = bus->ops->map_bus(bus, devfn, where & ~0x3);
-	if (!addr) {
-		*val = ~0;
+	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	*val = readl(addr);
 
@@ -228,7 +227,10 @@ int pci_user_read_config_##size						\
 	ret = dev->bus->ops->read(dev->bus, dev->devfn,			\
 					pos, sizeof(type), &data);	\
 	raw_spin_unlock_irq(&pci_lock);				\
-	*val = (type)data;						\
+	if (ret)							\
+		PCI_SET_ERROR_RESPONSE(val);				\
+	else								\
+		*val = (type)data;					\
 	return pcibios_err_to_errno(ret);				\
 }									\
 EXPORT_SYMBOL_GPL(pci_user_read_config_##size);
@@ -410,9 +412,9 @@ int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val)
 	if (pcie_capability_reg_implemented(dev, pos)) {
 		ret = pci_read_config_word(dev, pci_pcie_cap(dev) + pos, val);
 		/*
-		 * Reset *val to 0 if pci_read_config_word() fails, it may
-		 * have been written as 0xFFFF if hardware error happens
-		 * during pci_read_config_word().
+		 * Reset *val to 0 if pci_read_config_word() fails; it may
+		 * have been written as 0xFFFF (PCI_ERROR_RESPONSE) if the
+		 * config read failed on PCI.
 		 */
 		if (ret)
 			*val = 0;
@@ -445,9 +447,9 @@ int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val)
 	if (pcie_capability_reg_implemented(dev, pos)) {
 		ret = pci_read_config_dword(dev, pci_pcie_cap(dev) + pos, val);
 		/*
-		 * Reset *val to 0 if pci_read_config_dword() fails, it may
-		 * have been written as 0xFFFFFFFF if hardware error happens
-		 * during pci_read_config_dword().
+		 * Reset *val to 0 if pci_read_config_dword() fails; it may
+		 * have been written as 0xFFFFFFFF (PCI_ERROR_RESPONSE) if
+		 * the config read failed on PCI.
 		 */
 		if (ret)
 			*val = 0;
@@ -523,7 +525,7 @@ EXPORT_SYMBOL(pcie_capability_clear_and_set_dword);
 int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val)
 {
 	if (pci_dev_is_disconnected(dev)) {
-		*val = ~0;
+		PCI_SET_ERROR_RESPONSE(val);
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}
 	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
@@ -533,7 +535,7 @@ EXPORT_SYMBOL(pci_read_config_byte);
 int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val)
 {
 	if (pci_dev_is_disconnected(dev)) {
-		*val = ~0;
+		PCI_SET_ERROR_RESPONSE(val);
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}
 	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
@@ -544,7 +546,7 @@ int pci_read_config_dword(const struct pci_dev *dev, int where,
 					u32 *val)
 {
 	if (pci_dev_is_disconnected(dev)) {
-		*val = ~0;
+		PCI_SET_ERROR_RESPONSE(val);
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	}
 	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index aec8c9a3488b..601f2531ee91 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -4,7 +4,7 @@ menu "PCI controller drivers"
 	depends on PCI
 
 config PCI_MVEBU
-	bool "Marvell EBU PCIe controller"
+	tristate "Marvell EBU PCIe controller"
 	depends on ARCH_MVEBU || ARCH_DOVE || COMPILE_TEST
 	depends on MVEBU_MBUS
 	depends on ARM
@@ -281,7 +281,7 @@ config PCIE_BRCMSTB
 
 config PCI_HYPERV_INTERFACE
 	tristate "Hyper-V PCI Interface"
-	depends on X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64
+	depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN
 	help
 	  The Hyper-V PCI Interface is a helper driver allows other drivers to
 	  have a common interface with the Hyper-V PCI frontend driver.
@@ -332,8 +332,8 @@ config PCIE_APPLE
 	  If unsure, say Y if you have an Apple Silicon system.
 
 config PCIE_MT7621
-	bool "MediaTek MT7621 PCIe Controller"
-	depends on SOC_MT7621 || (MIPS && COMPILE_TEST)
+	tristate "MediaTek MT7621 PCIe Controller"
+	depends on SOC_MT7621 || COMPILE_TEST
 	select PHY_MT7621_PCI
 	default SOC_MT7621
 	help
diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 918e11082e6a..489586a4cdc7 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -51,11 +51,10 @@ enum link_status {
 #define MAX_LANES			2
 
 struct j721e_pcie {
-	struct device		*dev;
+	struct cdns_pcie	*cdns_pcie;
 	struct clk		*refclk;
 	u32			mode;
 	u32			num_lanes;
-	struct cdns_pcie	*cdns_pcie;
 	void __iomem		*user_cfg_base;
 	void __iomem		*intd_cfg_base;
 	u32			linkdown_irq_regfield;
@@ -99,7 +98,7 @@ static inline void j721e_pcie_intd_writel(struct j721e_pcie *pcie, u32 offset,
 static irqreturn_t j721e_pcie_link_irq_handler(int irq, void *priv)
 {
 	struct j721e_pcie *pcie = priv;
-	struct device *dev = pcie->dev;
+	struct device *dev = pcie->cdns_pcie->dev;
 	u32 reg;
 
 	reg = j721e_pcie_intd_readl(pcie, STATUS_REG_SYS_2);
@@ -165,7 +164,7 @@ static const struct cdns_pcie_ops j721e_pcie_ops = {
 static int j721e_pcie_set_mode(struct j721e_pcie *pcie, struct regmap *syscon,
 			       unsigned int offset)
 {
-	struct device *dev = pcie->dev;
+	struct device *dev = pcie->cdns_pcie->dev;
 	u32 mask = J721E_MODE_RC;
 	u32 mode = pcie->mode;
 	u32 val = 0;
@@ -184,7 +183,7 @@ static int j721e_pcie_set_mode(struct j721e_pcie *pcie, struct regmap *syscon,
 static int j721e_pcie_set_link_speed(struct j721e_pcie *pcie,
 				     struct regmap *syscon, unsigned int offset)
 {
-	struct device *dev = pcie->dev;
+	struct device *dev = pcie->cdns_pcie->dev;
 	struct device_node *np = dev->of_node;
 	int link_speed;
 	u32 val = 0;
@@ -205,7 +204,7 @@ static int j721e_pcie_set_link_speed(struct j721e_pcie *pcie,
 static int j721e_pcie_set_lane_count(struct j721e_pcie *pcie,
 				     struct regmap *syscon, unsigned int offset)
 {
-	struct device *dev = pcie->dev;
+	struct device *dev = pcie->cdns_pcie->dev;
 	u32 lanes = pcie->num_lanes;
 	u32 val = 0;
 	int ret;
@@ -220,7 +219,7 @@ static int j721e_pcie_set_lane_count(struct j721e_pcie *pcie,
 
 static int j721e_pcie_ctrl_init(struct j721e_pcie *pcie)
 {
-	struct device *dev = pcie->dev;
+	struct device *dev = pcie->cdns_pcie->dev;
 	struct device_node *node = dev->of_node;
 	struct of_phandle_args args;
 	unsigned int offset = 0;
@@ -354,7 +353,7 @@ static int j721e_pcie_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *node = dev->of_node;
 	struct pci_host_bridge *bridge;
-	struct j721e_pcie_data *data;
+	const struct j721e_pcie_data *data;
 	struct cdns_pcie *cdns_pcie;
 	struct j721e_pcie *pcie;
 	struct cdns_pcie_rc *rc;
@@ -367,7 +366,7 @@ static int j721e_pcie_probe(struct platform_device *pdev)
 	int ret;
 	int irq;
 
-	data = (struct j721e_pcie_data *)of_device_get_match_data(dev);
+	data = of_device_get_match_data(dev);
 	if (!data)
 		return -EINVAL;
 
@@ -377,7 +376,6 @@ static int j721e_pcie_probe(struct platform_device *pdev)
 	if (!pcie)
 		return -ENOMEM;
 
-	pcie->dev = dev;
 	pcie->mode = mode;
 	pcie->linkdown_irq_regfield = data->linkdown_irq_regfield;
 
diff --git a/drivers/pci/controller/cadence/pcie-cadence-plat.c b/drivers/pci/controller/cadence/pcie-cadence-plat.c
index a224afadbcc0..bac0541317c1 100644
--- a/drivers/pci/controller/cadence/pcie-cadence-plat.c
+++ b/drivers/pci/controller/cadence/pcie-cadence-plat.c
@@ -45,7 +45,6 @@ static int cdns_plat_pcie_probe(struct platform_device *pdev)
 {
 	const struct cdns_plat_pcie_of_data *data;
 	struct cdns_plat_pcie *cdns_plat_pcie;
-	const struct of_device_id *match;
 	struct device *dev = &pdev->dev;
 	struct pci_host_bridge *bridge;
 	struct cdns_pcie_ep *ep;
@@ -54,11 +53,10 @@ static int cdns_plat_pcie_probe(struct platform_device *pdev)
 	bool is_rc;
 	int ret;
 
-	match = of_match_device(cdns_plat_pcie_of_match, dev);
-	if (!match)
+	data = of_device_get_match_data(dev);
+	if (!data)
 		return -EINVAL;
 
-	data = (struct cdns_plat_pcie_of_data *)match->data;
 	is_rc = data->is_rc;
 
 	pr_debug(" Started %s with is_rc: %d\n", __func__, is_rc);
diff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/controller/cadence/pcie-cadence.h
index 262421e5d917..c8a27b6290ce 100644
--- a/drivers/pci/controller/cadence/pcie-cadence.h
+++ b/drivers/pci/controller/cadence/pcie-cadence.h
@@ -310,7 +310,7 @@ struct cdns_pcie {
  *            single function at a time
  * @vendor_id: PCI vendor ID
  * @device_id: PCI device ID
- * @avail_ib_bar: Satus of RP_BAR0, RP_BAR1 and	RP_NO_BAR if it's free or
+ * @avail_ib_bar: Status of RP_BAR0, RP_BAR1 and RP_NO_BAR if it's free or
  *                available
  * @quirk_retrain_flag: Retrain link as quirk for PCIe Gen2
  * @quirk_detect_quiet_flag: LTSSM Detect Quiet min delay set as quirk
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index a4221f6f3629..12d19183e746 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -697,16 +697,14 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	char name[10];
 	struct gpio_desc *reset;
-	const struct of_device_id *match;
 	const struct dra7xx_pcie_of_data *data;
 	enum dw_pcie_device_mode mode;
 	u32 b1co_mode_sel_mask;
 
-	match = of_match_device(of_match_ptr(of_dra7xx_pcie_match), dev);
-	if (!match)
+	data = of_device_get_match_data(dev);
+	if (!data)
 		return -EINVAL;
 
-	data = (struct dra7xx_pcie_of_data *)match->data;
 	mode = (enum dw_pcie_device_mode)data->mode;
 	b1co_mode_sel_mask = data->b1co_mode_sel_mask;
 
diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index 722dacdd5a17..467c8d1cd7e4 100644
--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -217,10 +217,8 @@ static int exynos_pcie_rd_own_conf(struct pci_bus *bus, unsigned int devfn,
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata);
 
-	if (PCI_SLOT(devfn)) {
-		*val = ~0;
+	if (PCI_SLOT(devfn))
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	*val = dw_pcie_read_dbi(pci, where, size);
 	return PCIBIOS_SUCCESSFUL;
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 26f49f797b0f..6974bd5aa116 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -29,6 +29,7 @@
 #include <linux/types.h>
 #include <linux/interrupt.h>
 #include <linux/reset.h>
+#include <linux/phy/phy.h>
 #include <linux/pm_domain.h>
 #include <linux/pm_runtime.h>
 
@@ -49,6 +50,7 @@ enum imx6_pcie_variants {
 	IMX6QP,
 	IMX7D,
 	IMX8MQ,
+	IMX8MM,
 };
 
 #define IMX6_PCIE_FLAG_IMX6_PHY			BIT(0)
@@ -88,6 +90,7 @@ struct imx6_pcie {
 	struct device		*pd_pcie;
 	/* power domain for pcie phy */
 	struct device		*pd_pcie_phy;
+	struct phy		*phy;
 	const struct imx6_pcie_drvdata *drvdata;
 };
 
@@ -372,6 +375,8 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie)
 	case IMX7D:
 	case IMX8MQ:
 		reset_control_assert(imx6_pcie->pciephy_reset);
+		fallthrough;
+	case IMX8MM:
 		reset_control_assert(imx6_pcie->apps_reset);
 		break;
 	case IMX6SX:
@@ -407,7 +412,8 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie)
 
 static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie)
 {
-	WARN_ON(imx6_pcie->drvdata->variant != IMX8MQ);
+	WARN_ON(imx6_pcie->drvdata->variant != IMX8MQ &&
+		imx6_pcie->drvdata->variant != IMX8MM);
 	return imx6_pcie->controller_id == 1 ? IOMUXC_GPR16 : IOMUXC_GPR14;
 }
 
@@ -446,6 +452,11 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie)
 		break;
 	case IMX7D:
 		break;
+	case IMX8MM:
+		ret = clk_prepare_enable(imx6_pcie->pcie_aux);
+		if (ret)
+			dev_err(dev, "unable to enable pcie_aux clock\n");
+		break;
 	case IMX8MQ:
 		ret = clk_prepare_enable(imx6_pcie->pcie_aux);
 		if (ret) {
@@ -522,6 +533,14 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
 		goto err_ref_clk;
 	}
 
+	switch (imx6_pcie->drvdata->variant) {
+	case IMX8MM:
+		if (phy_power_on(imx6_pcie->phy))
+			dev_err(dev, "unable to power on PHY\n");
+		break;
+	default:
+		break;
+	}
 	/* allow the clocks to stabilize */
 	usleep_range(200, 500);
 
@@ -538,6 +557,10 @@ static void imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
 	case IMX8MQ:
 		reset_control_deassert(imx6_pcie->pciephy_reset);
 		break;
+	case IMX8MM:
+		if (phy_init(imx6_pcie->phy))
+			dev_err(dev, "waiting for phy ready timeout!\n");
+		break;
 	case IMX7D:
 		reset_control_deassert(imx6_pcie->pciephy_reset);
 
@@ -614,6 +637,12 @@ static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie)
 static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie)
 {
 	switch (imx6_pcie->drvdata->variant) {
+	case IMX8MM:
+		/*
+		 * The PHY initialization had been done in the PHY
+		 * driver, break here directly.
+		 */
+		break;
 	case IMX8MQ:
 		/*
 		 * TODO: Currently this code assumes external
@@ -753,6 +782,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev)
 		break;
 	case IMX7D:
 	case IMX8MQ:
+	case IMX8MM:
 		reset_control_deassert(imx6_pcie->apps_reset);
 		break;
 	}
@@ -871,6 +901,7 @@ static void imx6_pcie_ltssm_disable(struct device *dev)
 				   IMX6Q_GPR12_PCIE_CTL_2, 0);
 		break;
 	case IMX7D:
+	case IMX8MM:
 		reset_control_assert(imx6_pcie->apps_reset);
 		break;
 	default:
@@ -930,6 +961,7 @@ static void imx6_pcie_clk_disable(struct imx6_pcie *imx6_pcie)
 				   IMX7D_GPR12_PCIE_PHY_REFCLK_SEL);
 		break;
 	case IMX8MQ:
+	case IMX8MM:
 		clk_disable_unprepare(imx6_pcie->pcie_aux);
 		break;
 	default:
@@ -945,8 +977,16 @@ static int imx6_pcie_suspend_noirq(struct device *dev)
 		return 0;
 
 	imx6_pcie_pm_turnoff(imx6_pcie);
-	imx6_pcie_clk_disable(imx6_pcie);
 	imx6_pcie_ltssm_disable(dev);
+	imx6_pcie_clk_disable(imx6_pcie);
+	switch (imx6_pcie->drvdata->variant) {
+	case IMX8MM:
+		if (phy_power_off(imx6_pcie->phy))
+			dev_err(dev, "unable to power off PHY\n");
+		break;
+	default:
+		break;
+	}
 
 	return 0;
 }
@@ -1043,11 +1083,6 @@ static int imx6_pcie_probe(struct platform_device *pdev)
 	}
 
 	/* Fetch clocks */
-	imx6_pcie->pcie_phy = devm_clk_get(dev, "pcie_phy");
-	if (IS_ERR(imx6_pcie->pcie_phy))
-		return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_phy),
-				     "pcie_phy clock source missing or invalid\n");
-
 	imx6_pcie->pcie_bus = devm_clk_get(dev, "pcie_bus");
 	if (IS_ERR(imx6_pcie->pcie_bus))
 		return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_bus),
@@ -1090,9 +1125,34 @@ static int imx6_pcie_probe(struct platform_device *pdev)
 			return PTR_ERR(imx6_pcie->apps_reset);
 		}
 		break;
+	case IMX8MM:
+		imx6_pcie->pcie_aux = devm_clk_get(dev, "pcie_aux");
+		if (IS_ERR(imx6_pcie->pcie_aux))
+			return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_aux),
+					     "pcie_aux clock source missing or invalid\n");
+		imx6_pcie->apps_reset = devm_reset_control_get_exclusive(dev,
+									 "apps");
+		if (IS_ERR(imx6_pcie->apps_reset))
+			return dev_err_probe(dev, PTR_ERR(imx6_pcie->apps_reset),
+					     "failed to get pcie apps reset control\n");
+
+		imx6_pcie->phy = devm_phy_get(dev, "pcie-phy");
+		if (IS_ERR(imx6_pcie->phy))
+			return dev_err_probe(dev, PTR_ERR(imx6_pcie->phy),
+					     "failed to get pcie phy\n");
+
+		break;
 	default:
 		break;
 	}
+	/* Don't fetch the pcie_phy clock, if it has abstract PHY driver */
+	if (imx6_pcie->phy == NULL) {
+		imx6_pcie->pcie_phy = devm_clk_get(dev, "pcie_phy");
+		if (IS_ERR(imx6_pcie->pcie_phy))
+			return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_phy),
+					     "pcie_phy clock source missing or invalid\n");
+	}
+
 
 	/* Grab turnoff reset */
 	imx6_pcie->turnoff_reset = devm_reset_control_get_optional_exclusive(dev, "turnoff");
@@ -1202,6 +1262,10 @@ static const struct imx6_pcie_drvdata drvdata[] = {
 	[IMX8MQ] = {
 		.variant = IMX8MQ,
 	},
+	[IMX8MM] = {
+		.variant = IMX8MM,
+		.flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND,
+	},
 };
 
 static const struct of_device_id imx6_pcie_of_match[] = {
@@ -1209,7 +1273,8 @@ static const struct of_device_id imx6_pcie_of_match[] = {
 	{ .compatible = "fsl,imx6sx-pcie", .data = &drvdata[IMX6SX], },
 	{ .compatible = "fsl,imx6qp-pcie", .data = &drvdata[IMX6QP], },
 	{ .compatible = "fsl,imx7d-pcie",  .data = &drvdata[IMX7D],  },
-	{ .compatible = "fsl,imx8mq-pcie", .data = &drvdata[IMX8MQ], } ,
+	{ .compatible = "fsl,imx8mq-pcie", .data = &drvdata[IMX8MQ], },
+	{ .compatible = "fsl,imx8mm-pcie", .data = &drvdata[IMX8MM], },
 	{},
 };
 
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 865258d8c53c..1c2ee4e13f1c 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -747,9 +747,9 @@ err:
 
 #ifdef CONFIG_ARM
 /*
- * When a PCI device does not exist during config cycles, keystone host gets a
- * bus error instead of returning 0xffffffff. This handler always returns 0
- * for this kind of faults.
+ * When a PCI device does not exist during config cycles, keystone host
+ * gets a bus error instead of returning 0xffffffff (PCI_ERROR_RESPONSE).
+ * This handler always returns 0 for this kind of fault.
  */
 static int ks_pcie_fault(unsigned long addr, unsigned int fsr,
 			 struct pt_regs *regs)
@@ -775,12 +775,19 @@ static int __init ks_pcie_init_id(struct keystone_pcie *ks_pcie)
 	struct dw_pcie *pci = ks_pcie->pci;
 	struct device *dev = pci->dev;
 	struct device_node *np = dev->of_node;
+	struct of_phandle_args args;
+	unsigned int offset = 0;
 
 	devctrl_regs = syscon_regmap_lookup_by_phandle(np, "ti,syscon-pcie-id");
 	if (IS_ERR(devctrl_regs))
 		return PTR_ERR(devctrl_regs);
 
-	ret = regmap_read(devctrl_regs, 0, &id);
+	/* Do not error out to maintain old DT compatibility */
+	ret = of_parse_phandle_with_fixed_args(np, "ti,syscon-pcie-id", 1, 0, &args);
+	if (!ret)
+		offset = args.args[0];
+
+	ret = regmap_read(devctrl_regs, offset, &id);
 	if (ret)
 		return ret;
 
@@ -989,6 +996,8 @@ err_phy:
 static int ks_pcie_set_mode(struct device *dev)
 {
 	struct device_node *np = dev->of_node;
+	struct of_phandle_args args;
+	unsigned int offset = 0;
 	struct regmap *syscon;
 	u32 val;
 	u32 mask;
@@ -998,10 +1007,15 @@ static int ks_pcie_set_mode(struct device *dev)
 	if (IS_ERR(syscon))
 		return 0;
 
+	/* Do not error out to maintain old DT compatibility */
+	ret = of_parse_phandle_with_fixed_args(np, "ti,syscon-pcie-mode", 1, 0, &args);
+	if (!ret)
+		offset = args.args[0];
+
 	mask = KS_PCIE_DEV_TYPE_MASK | KS_PCIE_SYSCLOCKOUTEN;
 	val = KS_PCIE_DEV_TYPE(RC) | KS_PCIE_SYSCLOCKOUTEN;
 
-	ret = regmap_update_bits(syscon, 0, mask, val);
+	ret = regmap_update_bits(syscon, offset, mask, val);
 	if (ret) {
 		dev_err(dev, "failed to set pcie mode\n");
 		return ret;
@@ -1014,6 +1028,8 @@ static int ks_pcie_am654_set_mode(struct device *dev,
 				  enum dw_pcie_device_mode mode)
 {
 	struct device_node *np = dev->of_node;
+	struct of_phandle_args args;
+	unsigned int offset = 0;
 	struct regmap *syscon;
 	u32 val;
 	u32 mask;
@@ -1023,6 +1039,11 @@ static int ks_pcie_am654_set_mode(struct device *dev,
 	if (IS_ERR(syscon))
 		return 0;
 
+	/* Do not error out to maintain old DT compatibility */
+	ret = of_parse_phandle_with_fixed_args(np, "ti,syscon-pcie-mode", 1, 0, &args);
+	if (!ret)
+		offset = args.args[0];
+
 	mask = AM654_PCIE_DEV_TYPE_MASK;
 
 	switch (mode) {
@@ -1037,7 +1058,7 @@ static int ks_pcie_am654_set_mode(struct device *dev,
 		return -EINVAL;
 	}
 
-	ret = regmap_update_bits(syscon, 0, mask, val);
+	ret = regmap_update_bits(syscon, offset, mask, val);
 	if (ret) {
 		dev_err(dev, "failed to set pcie mode\n");
 		return ret;
@@ -1087,7 +1108,6 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	const struct ks_pcie_of_data *data;
-	const struct of_device_id *match;
 	enum dw_pcie_device_mode mode;
 	struct dw_pcie *pci;
 	struct keystone_pcie *ks_pcie;
@@ -1104,8 +1124,7 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
 	int irq;
 	int i;
 
-	match = of_match_device(of_match_ptr(ks_pcie_of_match), dev);
-	data = (struct ks_pcie_of_data *)match->data;
+	data = of_device_get_match_data(dev);
 	if (!data)
 		return -EINVAL;
 
diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c
index 5b9c625df7b8..6a4f0619bb1c 100644
--- a/drivers/pci/controller/dwc/pci-layerscape.c
+++ b/drivers/pci/controller/dwc/pci-layerscape.c
@@ -3,6 +3,7 @@
  * PCIe host controller driver for Freescale Layerscape SoCs
  *
  * Copyright (C) 2014 Freescale Semiconductor.
+ * Copyright 2021 NXP
  *
  * Author: Minghuan Lian <Minghuan.Lian@freescale.com>
  */
@@ -22,12 +23,6 @@
 
 #include "pcie-designware.h"
 
-/* PEX1/2 Misc Ports Status Register */
-#define SCFG_PEXMSCPORTSR(pex_idx)	(0x94 + (pex_idx) * 4)
-#define LTSSM_STATE_SHIFT	20
-#define LTSSM_STATE_MASK	0x3f
-#define LTSSM_PCIE_L0		0x11 /* L0 state */
-
 /* PEX Internal Configuration Registers */
 #define PCIE_STRFMR1		0x71c /* Symbol Timer & Filter Mask Register1 */
 #define PCIE_ABSERR		0x8d0 /* Bridge Slave Error Response Register */
@@ -35,20 +30,8 @@
 
 #define PCIE_IATU_NUM		6
 
-struct ls_pcie_drvdata {
-	u32 lut_offset;
-	u32 ltssm_shift;
-	u32 lut_dbg;
-	const struct dw_pcie_host_ops *ops;
-	const struct dw_pcie_ops *dw_pcie_ops;
-};
-
 struct ls_pcie {
 	struct dw_pcie *pci;
-	void __iomem *lut;
-	struct regmap *scfg;
-	const struct ls_pcie_drvdata *drvdata;
-	int index;
 };
 
 #define to_ls_pcie(x)	dev_get_drvdata((x)->dev)
@@ -83,38 +66,6 @@ static void ls_pcie_drop_msg_tlp(struct ls_pcie *pcie)
 	iowrite32(val, pci->dbi_base + PCIE_STRFMR1);
 }
 
-static int ls1021_pcie_link_up(struct dw_pcie *pci)
-{
-	u32 state;
-	struct ls_pcie *pcie = to_ls_pcie(pci);
-
-	if (!pcie->scfg)
-		return 0;
-
-	regmap_read(pcie->scfg, SCFG_PEXMSCPORTSR(pcie->index), &state);
-	state = (state >> LTSSM_STATE_SHIFT) & LTSSM_STATE_MASK;
-
-	if (state < LTSSM_PCIE_L0)
-		return 0;
-
-	return 1;
-}
-
-static int ls_pcie_link_up(struct dw_pcie *pci)
-{
-	struct ls_pcie *pcie = to_ls_pcie(pci);
-	u32 state;
-
-	state = (ioread32(pcie->lut + pcie->drvdata->lut_dbg) >>
-		 pcie->drvdata->ltssm_shift) &
-		 LTSSM_STATE_MASK;
-
-	if (state < LTSSM_PCIE_L0)
-		return 0;
-
-	return 1;
-}
-
 /* Forward error response of outbound non-posted requests */
 static void ls_pcie_fix_error_response(struct ls_pcie *pcie)
 {
@@ -139,96 +90,20 @@ static int ls_pcie_host_init(struct pcie_port *pp)
 	return 0;
 }
 
-static int ls1021_pcie_host_init(struct pcie_port *pp)
-{
-	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct ls_pcie *pcie = to_ls_pcie(pci);
-	struct device *dev = pci->dev;
-	u32 index[2];
-	int ret;
-
-	pcie->scfg = syscon_regmap_lookup_by_phandle(dev->of_node,
-						     "fsl,pcie-scfg");
-	if (IS_ERR(pcie->scfg)) {
-		ret = PTR_ERR(pcie->scfg);
-		dev_err(dev, "No syscfg phandle specified\n");
-		pcie->scfg = NULL;
-		return ret;
-	}
-
-	if (of_property_read_u32_array(dev->of_node,
-				       "fsl,pcie-scfg", index, 2)) {
-		pcie->scfg = NULL;
-		return -EINVAL;
-	}
-	pcie->index = index[1];
-
-	return ls_pcie_host_init(pp);
-}
-
-static const struct dw_pcie_host_ops ls1021_pcie_host_ops = {
-	.host_init = ls1021_pcie_host_init,
-};
-
 static const struct dw_pcie_host_ops ls_pcie_host_ops = {
 	.host_init = ls_pcie_host_init,
 };
 
-static const struct dw_pcie_ops dw_ls1021_pcie_ops = {
-	.link_up = ls1021_pcie_link_up,
-};
-
-static const struct dw_pcie_ops dw_ls_pcie_ops = {
-	.link_up = ls_pcie_link_up,
-};
-
-static const struct ls_pcie_drvdata ls1021_drvdata = {
-	.ops = &ls1021_pcie_host_ops,
-	.dw_pcie_ops = &dw_ls1021_pcie_ops,
-};
-
-static const struct ls_pcie_drvdata ls1043_drvdata = {
-	.lut_offset = 0x10000,
-	.ltssm_shift = 24,
-	.lut_dbg = 0x7fc,
-	.ops = &ls_pcie_host_ops,
-	.dw_pcie_ops = &dw_ls_pcie_ops,
-};
-
-static const struct ls_pcie_drvdata ls1046_drvdata = {
-	.lut_offset = 0x80000,
-	.ltssm_shift = 24,
-	.lut_dbg = 0x407fc,
-	.ops = &ls_pcie_host_ops,
-	.dw_pcie_ops = &dw_ls_pcie_ops,
-};
-
-static const struct ls_pcie_drvdata ls2080_drvdata = {
-	.lut_offset = 0x80000,
-	.ltssm_shift = 0,
-	.lut_dbg = 0x7fc,
-	.ops = &ls_pcie_host_ops,
-	.dw_pcie_ops = &dw_ls_pcie_ops,
-};
-
-static const struct ls_pcie_drvdata ls2088_drvdata = {
-	.lut_offset = 0x80000,
-	.ltssm_shift = 0,
-	.lut_dbg = 0x407fc,
-	.ops = &ls_pcie_host_ops,
-	.dw_pcie_ops = &dw_ls_pcie_ops,
-};
-
 static const struct of_device_id ls_pcie_of_match[] = {
-	{ .compatible = "fsl,ls1012a-pcie", .data = &ls1046_drvdata },
-	{ .compatible = "fsl,ls1021a-pcie", .data = &ls1021_drvdata },
-	{ .compatible = "fsl,ls1028a-pcie", .data = &ls2088_drvdata },
-	{ .compatible = "fsl,ls1043a-pcie", .data = &ls1043_drvdata },
-	{ .compatible = "fsl,ls1046a-pcie", .data = &ls1046_drvdata },
-	{ .compatible = "fsl,ls2080a-pcie", .data = &ls2080_drvdata },
-	{ .compatible = "fsl,ls2085a-pcie", .data = &ls2080_drvdata },
-	{ .compatible = "fsl,ls2088a-pcie", .data = &ls2088_drvdata },
-	{ .compatible = "fsl,ls1088a-pcie", .data = &ls2088_drvdata },
+	{ .compatible = "fsl,ls1012a-pcie", },
+	{ .compatible = "fsl,ls1021a-pcie", },
+	{ .compatible = "fsl,ls1028a-pcie", },
+	{ .compatible = "fsl,ls1043a-pcie", },
+	{ .compatible = "fsl,ls1046a-pcie", },
+	{ .compatible = "fsl,ls2080a-pcie", },
+	{ .compatible = "fsl,ls2085a-pcie", },
+	{ .compatible = "fsl,ls2088a-pcie", },
+	{ .compatible = "fsl,ls1088a-pcie", },
 	{ },
 };
 
@@ -247,11 +122,8 @@ static int ls_pcie_probe(struct platform_device *pdev)
 	if (!pci)
 		return -ENOMEM;
 
-	pcie->drvdata = of_device_get_match_data(dev);
-
 	pci->dev = dev;
-	pci->ops = pcie->drvdata->dw_pcie_ops;
-	pci->pp.ops = pcie->drvdata->ops;
+	pci->pp.ops = &ls_pcie_host_ops;
 
 	pcie->pci = pci;
 
@@ -260,8 +132,6 @@ static int ls_pcie_probe(struct platform_device *pdev)
 	if (IS_ERR(pci->dbi_base))
 		return PTR_ERR(pci->dbi_base);
 
-	pcie->lut = pci->dbi_base + pcie->drvdata->lut_offset;
-
 	if (!ls_pcie_is_bridge(pcie))
 		return -ENODEV;
 
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index c91fc1954432..2f15441770e1 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -380,17 +380,15 @@ static int artpec6_pcie_probe(struct platform_device *pdev)
 	struct dw_pcie *pci;
 	struct artpec6_pcie *artpec6_pcie;
 	int ret;
-	const struct of_device_id *match;
 	const struct artpec_pcie_of_data *data;
 	enum artpec_pcie_variants variant;
 	enum dw_pcie_device_mode mode;
 	u32 val;
 
-	match = of_match_device(artpec6_pcie_of_match, dev);
-	if (!match)
+	data = of_device_get_match_data(dev);
+	if (!data)
 		return -EINVAL;
 
-	data = (struct artpec_pcie_of_data *)match->data;
 	variant = (enum artpec_pcie_variants)data->variant;
 	mode = (enum dw_pcie_device_mode)data->mode;
 
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index 8851eb161a0e..0c5de87d3cc6 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -122,15 +122,13 @@ static int dw_plat_pcie_probe(struct platform_device *pdev)
 	struct dw_plat_pcie *dw_plat_pcie;
 	struct dw_pcie *pci;
 	int ret;
-	const struct of_device_id *match;
 	const struct dw_plat_pcie_of_data *data;
 	enum dw_pcie_device_mode mode;
 
-	match = of_match_device(dw_plat_pcie_of_match, dev);
-	if (!match)
+	data = of_device_get_match_data(dev);
+	if (!data)
 		return -EINVAL;
 
-	data = (struct dw_plat_pcie_of_data *)match->data;
 	mode = (enum dw_pcie_device_mode)data->mode;
 
 	dw_plat_pcie = devm_kzalloc(dev, sizeof(*dw_plat_pcie), GFP_KERNEL);
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index 850b4533f4ef..d92c8a25094f 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -672,10 +672,11 @@ void dw_pcie_iatu_detect(struct dw_pcie *pci)
 		if (!pci->atu_base) {
 			struct resource *res =
 				platform_get_resource_byname(pdev, IORESOURCE_MEM, "atu");
-			if (res)
+			if (res) {
 				pci->atu_size = resource_size(res);
-			pci->atu_base = devm_ioremap_resource(dev, res);
-			if (IS_ERR(pci->atu_base))
+				pci->atu_base = devm_ioremap_resource(dev, res);
+			}
+			if (!pci->atu_base || IS_ERR(pci->atu_base))
 				pci->atu_base = pci->dbi_base + DEFAULT_DBI_ATU_OFFSET;
 		}
 
diff --git a/drivers/pci/controller/dwc/pcie-hisi.c b/drivers/pci/controller/dwc/pcie-hisi.c
index 8fc5960faf28..8904b5b85ee5 100644
--- a/drivers/pci/controller/dwc/pcie-hisi.c
+++ b/drivers/pci/controller/dwc/pcie-hisi.c
@@ -18,6 +18,10 @@
 
 #if defined(CONFIG_PCI_HISI) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
 
+struct hisi_pcie {
+	void __iomem	*reg_base;
+};
+
 static int hisi_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
 			     int size, u32 *val)
 {
@@ -58,10 +62,10 @@ static void __iomem *hisi_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
 				       int where)
 {
 	struct pci_config_window *cfg = bus->sysdata;
-	void __iomem *reg_base = cfg->priv;
+	struct hisi_pcie *pcie = cfg->priv;
 
 	if (bus->number == cfg->busr.start)
-		return reg_base + where;
+		return pcie->reg_base + where;
 	else
 		return pci_ecam_map_bus(bus, devfn, where);
 }
@@ -71,12 +75,16 @@ static void __iomem *hisi_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
 static int hisi_pcie_init(struct pci_config_window *cfg)
 {
 	struct device *dev = cfg->parent;
+	struct hisi_pcie *pcie;
 	struct acpi_device *adev = to_acpi_device(dev);
 	struct acpi_pci_root *root = acpi_driver_data(adev);
 	struct resource *res;
-	void __iomem *reg_base;
 	int ret;
 
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
+		return -ENOMEM;
+
 	/*
 	 * Retrieve RC base and size from a HISI0081 device with _UID
 	 * matching our segment.
@@ -91,11 +99,11 @@ static int hisi_pcie_init(struct pci_config_window *cfg)
 		return -ENOMEM;
 	}
 
-	reg_base = devm_pci_remap_cfgspace(dev, res->start, resource_size(res));
-	if (!reg_base)
+	pcie->reg_base = devm_pci_remap_cfgspace(dev, res->start, resource_size(res));
+	if (!pcie->reg_base)
 		return -ENOMEM;
 
-	cfg->priv = reg_base;
+	cfg->priv = pcie;
 	return 0;
 }
 
@@ -115,9 +123,13 @@ const struct pci_ecam_ops hisi_pcie_ops = {
 static int hisi_pcie_platform_init(struct pci_config_window *cfg)
 {
 	struct device *dev = cfg->parent;
+	struct hisi_pcie *pcie;
 	struct platform_device *pdev = to_platform_device(dev);
 	struct resource *res;
-	void __iomem *reg_base;
+
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
+		return -ENOMEM;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (!res) {
@@ -125,11 +137,11 @@ static int hisi_pcie_platform_init(struct pci_config_window *cfg)
 		return -EINVAL;
 	}
 
-	reg_base = devm_pci_remap_cfgspace(dev, res->start, resource_size(res));
-	if (!reg_base)
+	pcie->reg_base = devm_pci_remap_cfgspace(dev, res->start, resource_size(res));
+	if (!pcie->reg_base)
 		return -ENOMEM;
 
-	cfg->priv = reg_base;
+	cfg->priv = pcie;
 	return 0;
 }
 
diff --git a/drivers/pci/controller/dwc/pcie-histb.c b/drivers/pci/controller/dwc/pcie-histb.c
index 86f9d16c50d7..410555dccb6d 100644
--- a/drivers/pci/controller/dwc/pcie-histb.c
+++ b/drivers/pci/controller/dwc/pcie-histb.c
@@ -127,10 +127,8 @@ static int histb_pcie_rd_own_conf(struct pci_bus *bus, unsigned int devfn,
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata);
 
-	if (PCI_SLOT(devfn)) {
-		*val = ~0;
+	if (PCI_SLOT(devfn))
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	*val = dw_pcie_read_dbi(pci, where, size);
 	return PCIBIOS_SUCCESSFUL;
diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c
index d15cf35fa7f2..5ba144924ff8 100644
--- a/drivers/pci/controller/dwc/pcie-intel-gw.c
+++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
@@ -62,7 +62,7 @@ struct intel_pcie_soc {
 	unsigned int	pcie_ver;
 };
 
-struct intel_pcie_port {
+struct intel_pcie {
 	struct dw_pcie		pci;
 	void __iomem		*app_base;
 	struct gpio_desc	*reset_gpio;
@@ -83,53 +83,53 @@ static void pcie_update_bits(void __iomem *base, u32 ofs, u32 mask, u32 val)
 		writel(val, base + ofs);
 }
 
-static inline void pcie_app_wr(struct intel_pcie_port *lpp, u32 ofs, u32 val)
+static inline void pcie_app_wr(struct intel_pcie *pcie, u32 ofs, u32 val)
 {
-	writel(val, lpp->app_base + ofs);
+	writel(val, pcie->app_base + ofs);
 }
 
-static void pcie_app_wr_mask(struct intel_pcie_port *lpp, u32 ofs,
+static void pcie_app_wr_mask(struct intel_pcie *pcie, u32 ofs,
 			     u32 mask, u32 val)
 {
-	pcie_update_bits(lpp->app_base, ofs, mask, val);
+	pcie_update_bits(pcie->app_base, ofs, mask, val);
 }
 
-static inline u32 pcie_rc_cfg_rd(struct intel_pcie_port *lpp, u32 ofs)
+static inline u32 pcie_rc_cfg_rd(struct intel_pcie *pcie, u32 ofs)
 {
-	return dw_pcie_readl_dbi(&lpp->pci, ofs);
+	return dw_pcie_readl_dbi(&pcie->pci, ofs);
 }
 
-static inline void pcie_rc_cfg_wr(struct intel_pcie_port *lpp, u32 ofs, u32 val)
+static inline void pcie_rc_cfg_wr(struct intel_pcie *pcie, u32 ofs, u32 val)
 {
-	dw_pcie_writel_dbi(&lpp->pci, ofs, val);
+	dw_pcie_writel_dbi(&pcie->pci, ofs, val);
 }
 
-static void pcie_rc_cfg_wr_mask(struct intel_pcie_port *lpp, u32 ofs,
+static void pcie_rc_cfg_wr_mask(struct intel_pcie *pcie, u32 ofs,
 				u32 mask, u32 val)
 {
-	pcie_update_bits(lpp->pci.dbi_base, ofs, mask, val);
+	pcie_update_bits(pcie->pci.dbi_base, ofs, mask, val);
 }
 
-static void intel_pcie_ltssm_enable(struct intel_pcie_port *lpp)
+static void intel_pcie_ltssm_enable(struct intel_pcie *pcie)
 {
-	pcie_app_wr_mask(lpp, PCIE_APP_CCR, PCIE_APP_CCR_LTSSM_ENABLE,
+	pcie_app_wr_mask(pcie, PCIE_APP_CCR, PCIE_APP_CCR_LTSSM_ENABLE,
 			 PCIE_APP_CCR_LTSSM_ENABLE);
 }
 
-static void intel_pcie_ltssm_disable(struct intel_pcie_port *lpp)
+static void intel_pcie_ltssm_disable(struct intel_pcie *pcie)
 {
-	pcie_app_wr_mask(lpp, PCIE_APP_CCR, PCIE_APP_CCR_LTSSM_ENABLE, 0);
+	pcie_app_wr_mask(pcie, PCIE_APP_CCR, PCIE_APP_CCR_LTSSM_ENABLE, 0);
 }
 
-static void intel_pcie_link_setup(struct intel_pcie_port *lpp)
+static void intel_pcie_link_setup(struct intel_pcie *pcie)
 {
 	u32 val;
-	u8 offset = dw_pcie_find_capability(&lpp->pci, PCI_CAP_ID_EXP);
+	u8 offset = dw_pcie_find_capability(&pcie->pci, PCI_CAP_ID_EXP);
 
-	val = pcie_rc_cfg_rd(lpp, offset + PCI_EXP_LNKCTL);
+	val = pcie_rc_cfg_rd(pcie, offset + PCI_EXP_LNKCTL);
 
 	val &= ~(PCI_EXP_LNKCTL_LD | PCI_EXP_LNKCTL_ASPMC);
-	pcie_rc_cfg_wr(lpp, offset + PCI_EXP_LNKCTL, val);
+	pcie_rc_cfg_wr(pcie, offset + PCI_EXP_LNKCTL, val);
 }
 
 static void intel_pcie_init_n_fts(struct dw_pcie *pci)
@@ -148,14 +148,14 @@ static void intel_pcie_init_n_fts(struct dw_pcie *pci)
 	pci->n_fts[0] = PORT_AFR_N_FTS_GEN12_DFT;
 }
 
-static int intel_pcie_ep_rst_init(struct intel_pcie_port *lpp)
+static int intel_pcie_ep_rst_init(struct intel_pcie *pcie)
 {
-	struct device *dev = lpp->pci.dev;
+	struct device *dev = pcie->pci.dev;
 	int ret;
 
-	lpp->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
-	if (IS_ERR(lpp->reset_gpio)) {
-		ret = PTR_ERR(lpp->reset_gpio);
+	pcie->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(pcie->reset_gpio)) {
+		ret = PTR_ERR(pcie->reset_gpio);
 		if (ret != -EPROBE_DEFER)
 			dev_err(dev, "Failed to request PCIe GPIO: %d\n", ret);
 		return ret;
@@ -167,19 +167,19 @@ static int intel_pcie_ep_rst_init(struct intel_pcie_port *lpp)
 	return 0;
 }
 
-static void intel_pcie_core_rst_assert(struct intel_pcie_port *lpp)
+static void intel_pcie_core_rst_assert(struct intel_pcie *pcie)
 {
-	reset_control_assert(lpp->core_rst);
+	reset_control_assert(pcie->core_rst);
 }
 
-static void intel_pcie_core_rst_deassert(struct intel_pcie_port *lpp)
+static void intel_pcie_core_rst_deassert(struct intel_pcie *pcie)
 {
 	/*
 	 * One micro-second delay to make sure the reset pulse
 	 * wide enough so that core reset is clean.
 	 */
 	udelay(1);
-	reset_control_deassert(lpp->core_rst);
+	reset_control_deassert(pcie->core_rst);
 
 	/*
 	 * Some SoC core reset also reset PHY, more delay needed
@@ -188,58 +188,58 @@ static void intel_pcie_core_rst_deassert(struct intel_pcie_port *lpp)
 	usleep_range(1000, 2000);
 }
 
-static void intel_pcie_device_rst_assert(struct intel_pcie_port *lpp)
+static void intel_pcie_device_rst_assert(struct intel_pcie *pcie)
 {
-	gpiod_set_value_cansleep(lpp->reset_gpio, 1);
+	gpiod_set_value_cansleep(pcie->reset_gpio, 1);
 }
 
-static void intel_pcie_device_rst_deassert(struct intel_pcie_port *lpp)
+static void intel_pcie_device_rst_deassert(struct intel_pcie *pcie)
 {
-	msleep(lpp->rst_intrvl);
-	gpiod_set_value_cansleep(lpp->reset_gpio, 0);
+	msleep(pcie->rst_intrvl);
+	gpiod_set_value_cansleep(pcie->reset_gpio, 0);
 }
 
-static void intel_pcie_core_irq_disable(struct intel_pcie_port *lpp)
+static void intel_pcie_core_irq_disable(struct intel_pcie *pcie)
 {
-	pcie_app_wr(lpp, PCIE_APP_IRNEN, 0);
-	pcie_app_wr(lpp, PCIE_APP_IRNCR, PCIE_APP_IRN_INT);
+	pcie_app_wr(pcie, PCIE_APP_IRNEN, 0);
+	pcie_app_wr(pcie, PCIE_APP_IRNCR, PCIE_APP_IRN_INT);
 }
 
 static int intel_pcie_get_resources(struct platform_device *pdev)
 {
-	struct intel_pcie_port *lpp = platform_get_drvdata(pdev);
-	struct dw_pcie *pci = &lpp->pci;
+	struct intel_pcie *pcie = platform_get_drvdata(pdev);
+	struct dw_pcie *pci = &pcie->pci;
 	struct device *dev = pci->dev;
 	int ret;
 
-	lpp->core_clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(lpp->core_clk)) {
-		ret = PTR_ERR(lpp->core_clk);
+	pcie->core_clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(pcie->core_clk)) {
+		ret = PTR_ERR(pcie->core_clk);
 		if (ret != -EPROBE_DEFER)
 			dev_err(dev, "Failed to get clks: %d\n", ret);
 		return ret;
 	}
 
-	lpp->core_rst = devm_reset_control_get(dev, NULL);
-	if (IS_ERR(lpp->core_rst)) {
-		ret = PTR_ERR(lpp->core_rst);
+	pcie->core_rst = devm_reset_control_get(dev, NULL);
+	if (IS_ERR(pcie->core_rst)) {
+		ret = PTR_ERR(pcie->core_rst);
 		if (ret != -EPROBE_DEFER)
 			dev_err(dev, "Failed to get resets: %d\n", ret);
 		return ret;
 	}
 
 	ret = device_property_read_u32(dev, "reset-assert-ms",
-				       &lpp->rst_intrvl);
+				       &pcie->rst_intrvl);
 	if (ret)
-		lpp->rst_intrvl = RESET_INTERVAL_MS;
+		pcie->rst_intrvl = RESET_INTERVAL_MS;
 
-	lpp->app_base = devm_platform_ioremap_resource_byname(pdev, "app");
-	if (IS_ERR(lpp->app_base))
-		return PTR_ERR(lpp->app_base);
+	pcie->app_base = devm_platform_ioremap_resource_byname(pdev, "app");
+	if (IS_ERR(pcie->app_base))
+		return PTR_ERR(pcie->app_base);
 
-	lpp->phy = devm_phy_get(dev, "pcie");
-	if (IS_ERR(lpp->phy)) {
-		ret = PTR_ERR(lpp->phy);
+	pcie->phy = devm_phy_get(dev, "pcie");
+	if (IS_ERR(pcie->phy)) {
+		ret = PTR_ERR(pcie->phy);
 		if (ret != -EPROBE_DEFER)
 			dev_err(dev, "Couldn't get pcie-phy: %d\n", ret);
 		return ret;
@@ -248,137 +248,137 @@ static int intel_pcie_get_resources(struct platform_device *pdev)
 	return 0;
 }
 
-static int intel_pcie_wait_l2(struct intel_pcie_port *lpp)
+static int intel_pcie_wait_l2(struct intel_pcie *pcie)
 {
 	u32 value;
 	int ret;
-	struct dw_pcie *pci = &lpp->pci;
+	struct dw_pcie *pci = &pcie->pci;
 
 	if (pci->link_gen < 3)
 		return 0;
 
 	/* Send PME_TURN_OFF message */
-	pcie_app_wr_mask(lpp, PCIE_APP_MSG_CR, PCIE_APP_MSG_XMT_PM_TURNOFF,
+	pcie_app_wr_mask(pcie, PCIE_APP_MSG_CR, PCIE_APP_MSG_XMT_PM_TURNOFF,
 			 PCIE_APP_MSG_XMT_PM_TURNOFF);
 
 	/* Read PMC status and wait for falling into L2 link state */
-	ret = readl_poll_timeout(lpp->app_base + PCIE_APP_PMC, value,
+	ret = readl_poll_timeout(pcie->app_base + PCIE_APP_PMC, value,
 				 value & PCIE_APP_PMC_IN_L2, 20,
 				 jiffies_to_usecs(5 * HZ));
 	if (ret)
-		dev_err(lpp->pci.dev, "PCIe link enter L2 timeout!\n");
+		dev_err(pcie->pci.dev, "PCIe link enter L2 timeout!\n");
 
 	return ret;
 }
 
-static void intel_pcie_turn_off(struct intel_pcie_port *lpp)
+static void intel_pcie_turn_off(struct intel_pcie *pcie)
 {
-	if (dw_pcie_link_up(&lpp->pci))
-		intel_pcie_wait_l2(lpp);
+	if (dw_pcie_link_up(&pcie->pci))
+		intel_pcie_wait_l2(pcie);
 
 	/* Put endpoint device in reset state */
-	intel_pcie_device_rst_assert(lpp);
-	pcie_rc_cfg_wr_mask(lpp, PCI_COMMAND, PCI_COMMAND_MEMORY, 0);
+	intel_pcie_device_rst_assert(pcie);
+	pcie_rc_cfg_wr_mask(pcie, PCI_COMMAND, PCI_COMMAND_MEMORY, 0);
 }
 
-static int intel_pcie_host_setup(struct intel_pcie_port *lpp)
+static int intel_pcie_host_setup(struct intel_pcie *pcie)
 {
 	int ret;
-	struct dw_pcie *pci = &lpp->pci;
+	struct dw_pcie *pci = &pcie->pci;
 
-	intel_pcie_core_rst_assert(lpp);
-	intel_pcie_device_rst_assert(lpp);
+	intel_pcie_core_rst_assert(pcie);
+	intel_pcie_device_rst_assert(pcie);
 
-	ret = phy_init(lpp->phy);
+	ret = phy_init(pcie->phy);
 	if (ret)
 		return ret;
 
-	intel_pcie_core_rst_deassert(lpp);
+	intel_pcie_core_rst_deassert(pcie);
 
-	ret = clk_prepare_enable(lpp->core_clk);
+	ret = clk_prepare_enable(pcie->core_clk);
 	if (ret) {
-		dev_err(lpp->pci.dev, "Core clock enable failed: %d\n", ret);
+		dev_err(pcie->pci.dev, "Core clock enable failed: %d\n", ret);
 		goto clk_err;
 	}
 
 	pci->atu_base = pci->dbi_base + 0xC0000;
 
-	intel_pcie_ltssm_disable(lpp);
-	intel_pcie_link_setup(lpp);
+	intel_pcie_ltssm_disable(pcie);
+	intel_pcie_link_setup(pcie);
 	intel_pcie_init_n_fts(pci);
 	dw_pcie_setup_rc(&pci->pp);
 	dw_pcie_upconfig_setup(pci);
 
-	intel_pcie_device_rst_deassert(lpp);
-	intel_pcie_ltssm_enable(lpp);
+	intel_pcie_device_rst_deassert(pcie);
+	intel_pcie_ltssm_enable(pcie);
 
 	ret = dw_pcie_wait_for_link(pci);
 	if (ret)
 		goto app_init_err;
 
 	/* Enable integrated interrupts */
-	pcie_app_wr_mask(lpp, PCIE_APP_IRNEN, PCIE_APP_IRN_INT,
+	pcie_app_wr_mask(pcie, PCIE_APP_IRNEN, PCIE_APP_IRN_INT,
 			 PCIE_APP_IRN_INT);
 
 	return 0;
 
 app_init_err:
-	clk_disable_unprepare(lpp->core_clk);
+	clk_disable_unprepare(pcie->core_clk);
 clk_err:
-	intel_pcie_core_rst_assert(lpp);
-	phy_exit(lpp->phy);
+	intel_pcie_core_rst_assert(pcie);
+	phy_exit(pcie->phy);
 
 	return ret;
 }
 
-static void __intel_pcie_remove(struct intel_pcie_port *lpp)
+static void __intel_pcie_remove(struct intel_pcie *pcie)
 {
-	intel_pcie_core_irq_disable(lpp);
-	intel_pcie_turn_off(lpp);
-	clk_disable_unprepare(lpp->core_clk);
-	intel_pcie_core_rst_assert(lpp);
-	phy_exit(lpp->phy);
+	intel_pcie_core_irq_disable(pcie);
+	intel_pcie_turn_off(pcie);
+	clk_disable_unprepare(pcie->core_clk);
+	intel_pcie_core_rst_assert(pcie);
+	phy_exit(pcie->phy);
 }
 
 static int intel_pcie_remove(struct platform_device *pdev)
 {
-	struct intel_pcie_port *lpp = platform_get_drvdata(pdev);
-	struct pcie_port *pp = &lpp->pci.pp;
+	struct intel_pcie *pcie = platform_get_drvdata(pdev);
+	struct pcie_port *pp = &pcie->pci.pp;
 
 	dw_pcie_host_deinit(pp);
-	__intel_pcie_remove(lpp);
+	__intel_pcie_remove(pcie);
 
 	return 0;
 }
 
 static int __maybe_unused intel_pcie_suspend_noirq(struct device *dev)
 {
-	struct intel_pcie_port *lpp = dev_get_drvdata(dev);
+	struct intel_pcie *pcie = dev_get_drvdata(dev);
 	int ret;
 
-	intel_pcie_core_irq_disable(lpp);
-	ret = intel_pcie_wait_l2(lpp);
+	intel_pcie_core_irq_disable(pcie);
+	ret = intel_pcie_wait_l2(pcie);
 	if (ret)
 		return ret;
 
-	phy_exit(lpp->phy);
-	clk_disable_unprepare(lpp->core_clk);
+	phy_exit(pcie->phy);
+	clk_disable_unprepare(pcie->core_clk);
 	return ret;
 }
 
 static int __maybe_unused intel_pcie_resume_noirq(struct device *dev)
 {
-	struct intel_pcie_port *lpp = dev_get_drvdata(dev);
+	struct intel_pcie *pcie = dev_get_drvdata(dev);
 
-	return intel_pcie_host_setup(lpp);
+	return intel_pcie_host_setup(pcie);
 }
 
 static int intel_pcie_rc_init(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct intel_pcie_port *lpp = dev_get_drvdata(pci->dev);
+	struct intel_pcie *pcie = dev_get_drvdata(pci->dev);
 
-	return intel_pcie_host_setup(lpp);
+	return intel_pcie_host_setup(pcie);
 }
 
 static u64 intel_pcie_cpu_addr(struct dw_pcie *pcie, u64 cpu_addr)
@@ -402,17 +402,17 @@ static int intel_pcie_probe(struct platform_device *pdev)
 {
 	const struct intel_pcie_soc *data;
 	struct device *dev = &pdev->dev;
-	struct intel_pcie_port *lpp;
+	struct intel_pcie *pcie;
 	struct pcie_port *pp;
 	struct dw_pcie *pci;
 	int ret;
 
-	lpp = devm_kzalloc(dev, sizeof(*lpp), GFP_KERNEL);
-	if (!lpp)
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, lpp);
-	pci = &lpp->pci;
+	platform_set_drvdata(pdev, pcie);
+	pci = &pcie->pci;
 	pci->dev = dev;
 	pp = &pci->pp;
 
@@ -420,7 +420,7 @@ static int intel_pcie_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = intel_pcie_ep_rst_init(lpp);
+	ret = intel_pcie_ep_rst_init(pcie);
 	if (ret)
 		return ret;
 
diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index 095afbccf9c1..fa6886d66488 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -530,10 +530,8 @@ static int kirin_pcie_rd_own_conf(struct pci_bus *bus, unsigned int devfn,
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata);
 
-	if (PCI_SLOT(devfn)) {
-		*val = ~0;
+	if (PCI_SLOT(devfn))
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	*val = dw_pcie_read_dbi(pci, where, size);
 	return PCIBIOS_SUCCESSFUL;
@@ -773,7 +771,6 @@ static const struct of_device_id kirin_pcie_match[] = {
 static int kirin_pcie_probe(struct platform_device *pdev)
 {
 	enum pcie_kirin_phy_type phy_type;
-	const struct of_device_id *of_id;
 	struct device *dev = &pdev->dev;
 	struct kirin_pcie *kirin_pcie;
 	struct dw_pcie *pci;
@@ -784,13 +781,12 @@ static int kirin_pcie_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	of_id = of_match_device(kirin_pcie_match, dev);
-	if (!of_id) {
+	phy_type = (long)of_device_get_match_data(dev);
+	if (!phy_type) {
 		dev_err(dev, "OF data missing\n");
 		return -EINVAL;
 	}
 
-	phy_type = (long)of_id->data;
 
 	kirin_pcie = devm_kzalloc(dev, sizeof(struct kirin_pcie), GFP_KERNEL);
 	if (!kirin_pcie)
diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c
index cfe66bf04c1d..6ce8eddf3a37 100644
--- a/drivers/pci/controller/dwc/pcie-qcom-ep.c
+++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c
@@ -553,10 +553,8 @@ static int qcom_pcie_ep_enable_irq_resources(struct platform_device *pdev,
 	int irq, ret;
 
 	irq = platform_get_irq_byname(pdev, "global");
-	if (irq < 0) {
-		dev_err(&pdev->dev, "Failed to get Global IRQ\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
 					qcom_pcie_ep_global_irq_thread,
@@ -620,7 +618,7 @@ static void qcom_pcie_ep_init(struct dw_pcie_ep *ep)
 		dw_pcie_ep_reset_bar(pci, bar);
 }
 
-static struct dw_pcie_ep_ops pci_ep_ops = {
+static const struct dw_pcie_ep_ops pci_ep_ops = {
 	.ep_init = qcom_pcie_ep_init,
 	.raise_irq = qcom_pcie_ep_raise_irq,
 	.get_features = qcom_pcie_epc_get_features,
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 1c3d1116bb60..c19cd506ed3f 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1343,7 +1343,7 @@ static int qcom_pcie_config_sid_sm8250(struct qcom_pcie *pcie)
 
 	/* Look for an available entry to hold the mapping */
 	for (i = 0; i < nr_map; i++) {
-		u16 bdf_be = cpu_to_be16(map[i].bdf);
+		__be16 bdf_be = cpu_to_be16(map[i].bdf);
 		u32 val;
 		u8 hash;
 
@@ -1534,6 +1534,12 @@ static int qcom_pcie_probe(struct platform_device *pdev)
 	const struct qcom_pcie_cfg *pcie_cfg;
 	int ret;
 
+	pcie_cfg = of_device_get_match_data(dev);
+	if (!pcie_cfg || !pcie_cfg->ops) {
+		dev_err(dev, "Invalid platform data\n");
+		return -EINVAL;
+	}
+
 	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
 	if (!pcie)
 		return -ENOMEM;
@@ -1553,12 +1559,6 @@ static int qcom_pcie_probe(struct platform_device *pdev)
 
 	pcie->pci = pci;
 
-	pcie_cfg = of_device_get_match_data(dev);
-	if (!pcie_cfg || !pcie_cfg->ops) {
-		dev_err(dev, "Invalid platform data\n");
-		return -EINVAL;
-	}
-
 	pcie->ops = pcie_cfg->ops;
 	pcie->pipe_clk_need_muxing = pcie_cfg->pipe_clk_need_muxing;
 
diff --git a/drivers/pci/controller/dwc/pcie-spear13xx.c b/drivers/pci/controller/dwc/pcie-spear13xx.c
index 1a9e353bef55..1569e82b5568 100644
--- a/drivers/pci/controller/dwc/pcie-spear13xx.c
+++ b/drivers/pci/controller/dwc/pcie-spear13xx.c
@@ -69,7 +69,7 @@ struct pcie_app_reg {
 static int spear13xx_pcie_start_link(struct dw_pcie *pci)
 {
 	struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pci);
-	struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
+	struct pcie_app_reg __iomem *app_reg = spear13xx_pcie->app_base;
 
 	/* enable ltssm */
 	writel(DEVICE_TYPE_RC | (1 << MISCTRL_EN_ID)
@@ -83,7 +83,7 @@ static int spear13xx_pcie_start_link(struct dw_pcie *pci)
 static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg)
 {
 	struct spear13xx_pcie *spear13xx_pcie = arg;
-	struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
+	struct pcie_app_reg __iomem *app_reg = spear13xx_pcie->app_base;
 	struct dw_pcie *pci = spear13xx_pcie->pci;
 	struct pcie_port *pp = &pci->pp;
 	unsigned int status;
@@ -102,7 +102,7 @@ static irqreturn_t spear13xx_pcie_irq_handler(int irq, void *arg)
 
 static void spear13xx_pcie_enable_interrupts(struct spear13xx_pcie *spear13xx_pcie)
 {
-	struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
+	struct pcie_app_reg __iomem *app_reg = spear13xx_pcie->app_base;
 
 	/* Enable MSI interrupt */
 	if (IS_ENABLED(CONFIG_PCI_MSI))
@@ -113,7 +113,7 @@ static void spear13xx_pcie_enable_interrupts(struct spear13xx_pcie *spear13xx_pc
 static int spear13xx_pcie_link_up(struct dw_pcie *pci)
 {
 	struct spear13xx_pcie *spear13xx_pcie = to_spear13xx_pcie(pci);
-	struct pcie_app_reg *app_reg = spear13xx_pcie->app_base;
+	struct pcie_app_reg __iomem *app_reg = spear13xx_pcie->app_base;
 
 	if (readl(&app_reg->app_status_1) & XMLH_LINK_UP)
 		return 1;
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 904976913081..b1b5f836a806 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -245,7 +245,7 @@ static const unsigned int pcie_gen_freq[] = {
 	GEN4_CORE_CLK_FREQ
 };
 
-struct tegra_pcie_dw {
+struct tegra194_pcie {
 	struct device *dev;
 	struct resource *appl_res;
 	struct resource *dbi_res;
@@ -289,22 +289,22 @@ struct tegra_pcie_dw {
 	int ep_state;
 };
 
-struct tegra_pcie_dw_of_data {
+struct tegra194_pcie_of_data {
 	enum dw_pcie_device_mode mode;
 };
 
-static inline struct tegra_pcie_dw *to_tegra_pcie(struct dw_pcie *pci)
+static inline struct tegra194_pcie *to_tegra_pcie(struct dw_pcie *pci)
 {
-	return container_of(pci, struct tegra_pcie_dw, pci);
+	return container_of(pci, struct tegra194_pcie, pci);
 }
 
-static inline void appl_writel(struct tegra_pcie_dw *pcie, const u32 value,
+static inline void appl_writel(struct tegra194_pcie *pcie, const u32 value,
 			       const u32 reg)
 {
 	writel_relaxed(value, pcie->appl_base + reg);
 }
 
-static inline u32 appl_readl(struct tegra_pcie_dw *pcie, const u32 reg)
+static inline u32 appl_readl(struct tegra194_pcie *pcie, const u32 reg)
 {
 	return readl_relaxed(pcie->appl_base + reg);
 }
@@ -316,7 +316,7 @@ struct tegra_pcie_soc {
 static void apply_bad_link_workaround(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 	u32 current_link_width;
 	u16 val;
 
@@ -349,7 +349,7 @@ static void apply_bad_link_workaround(struct pcie_port *pp)
 
 static irqreturn_t tegra_pcie_rp_irq_handler(int irq, void *arg)
 {
-	struct tegra_pcie_dw *pcie = arg;
+	struct tegra194_pcie *pcie = arg;
 	struct dw_pcie *pci = &pcie->pci;
 	struct pcie_port *pp = &pci->pp;
 	u32 val, tmp;
@@ -420,7 +420,7 @@ static irqreturn_t tegra_pcie_rp_irq_handler(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static void pex_ep_event_hot_rst_done(struct tegra_pcie_dw *pcie)
+static void pex_ep_event_hot_rst_done(struct tegra194_pcie *pcie)
 {
 	u32 val;
 
@@ -448,7 +448,7 @@ static void pex_ep_event_hot_rst_done(struct tegra_pcie_dw *pcie)
 
 static irqreturn_t tegra_pcie_ep_irq_thread(int irq, void *arg)
 {
-	struct tegra_pcie_dw *pcie = arg;
+	struct tegra194_pcie *pcie = arg;
 	struct dw_pcie *pci = &pcie->pci;
 	u32 val, speed;
 
@@ -494,7 +494,7 @@ static irqreturn_t tegra_pcie_ep_irq_thread(int irq, void *arg)
 
 static irqreturn_t tegra_pcie_ep_hard_irq(int irq, void *arg)
 {
-	struct tegra_pcie_dw *pcie = arg;
+	struct tegra194_pcie *pcie = arg;
 	struct dw_pcie_ep *ep = &pcie->pci.ep;
 	int spurious = 1;
 	u32 status_l0, status_l1, link_status;
@@ -537,7 +537,7 @@ static irqreturn_t tegra_pcie_ep_hard_irq(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static int tegra_pcie_dw_rd_own_conf(struct pci_bus *bus, u32 devfn, int where,
+static int tegra194_pcie_rd_own_conf(struct pci_bus *bus, u32 devfn, int where,
 				     int size, u32 *val)
 {
 	/*
@@ -554,7 +554,7 @@ static int tegra_pcie_dw_rd_own_conf(struct pci_bus *bus, u32 devfn, int where,
 	return pci_generic_config_read(bus, devfn, where, size, val);
 }
 
-static int tegra_pcie_dw_wr_own_conf(struct pci_bus *bus, u32 devfn, int where,
+static int tegra194_pcie_wr_own_conf(struct pci_bus *bus, u32 devfn, int where,
 				     int size, u32 val)
 {
 	/*
@@ -571,8 +571,8 @@ static int tegra_pcie_dw_wr_own_conf(struct pci_bus *bus, u32 devfn, int where,
 
 static struct pci_ops tegra_pci_ops = {
 	.map_bus = dw_pcie_own_conf_map_bus,
-	.read = tegra_pcie_dw_rd_own_conf,
-	.write = tegra_pcie_dw_wr_own_conf,
+	.read = tegra194_pcie_rd_own_conf,
+	.write = tegra194_pcie_wr_own_conf,
 };
 
 #if defined(CONFIG_PCIEASPM)
@@ -594,7 +594,7 @@ static const u32 event_cntr_data_offset[] = {
 	0x1dc
 };
 
-static void disable_aspm_l11(struct tegra_pcie_dw *pcie)
+static void disable_aspm_l11(struct tegra194_pcie *pcie)
 {
 	u32 val;
 
@@ -603,7 +603,7 @@ static void disable_aspm_l11(struct tegra_pcie_dw *pcie)
 	dw_pcie_writel_dbi(&pcie->pci, pcie->cfg_link_cap_l1sub, val);
 }
 
-static void disable_aspm_l12(struct tegra_pcie_dw *pcie)
+static void disable_aspm_l12(struct tegra194_pcie *pcie)
 {
 	u32 val;
 
@@ -612,7 +612,7 @@ static void disable_aspm_l12(struct tegra_pcie_dw *pcie)
 	dw_pcie_writel_dbi(&pcie->pci, pcie->cfg_link_cap_l1sub, val);
 }
 
-static inline u32 event_counter_prog(struct tegra_pcie_dw *pcie, u32 event)
+static inline u32 event_counter_prog(struct tegra194_pcie *pcie, u32 event)
 {
 	u32 val;
 
@@ -629,7 +629,7 @@ static inline u32 event_counter_prog(struct tegra_pcie_dw *pcie, u32 event)
 
 static int aspm_state_cnt(struct seq_file *s, void *data)
 {
-	struct tegra_pcie_dw *pcie = (struct tegra_pcie_dw *)
+	struct tegra194_pcie *pcie = (struct tegra194_pcie *)
 				     dev_get_drvdata(s->private);
 	u32 val;
 
@@ -660,7 +660,7 @@ static int aspm_state_cnt(struct seq_file *s, void *data)
 	return 0;
 }
 
-static void init_host_aspm(struct tegra_pcie_dw *pcie)
+static void init_host_aspm(struct tegra194_pcie *pcie)
 {
 	struct dw_pcie *pci = &pcie->pci;
 	u32 val;
@@ -688,22 +688,22 @@ static void init_host_aspm(struct tegra_pcie_dw *pcie)
 	dw_pcie_writel_dbi(pci, PCIE_PORT_AFR, val);
 }
 
-static void init_debugfs(struct tegra_pcie_dw *pcie)
+static void init_debugfs(struct tegra194_pcie *pcie)
 {
 	debugfs_create_devm_seqfile(pcie->dev, "aspm_state_cnt", pcie->debugfs,
 				    aspm_state_cnt);
 }
 #else
-static inline void disable_aspm_l12(struct tegra_pcie_dw *pcie) { return; }
-static inline void disable_aspm_l11(struct tegra_pcie_dw *pcie) { return; }
-static inline void init_host_aspm(struct tegra_pcie_dw *pcie) { return; }
-static inline void init_debugfs(struct tegra_pcie_dw *pcie) { return; }
+static inline void disable_aspm_l12(struct tegra194_pcie *pcie) { return; }
+static inline void disable_aspm_l11(struct tegra194_pcie *pcie) { return; }
+static inline void init_host_aspm(struct tegra194_pcie *pcie) { return; }
+static inline void init_debugfs(struct tegra194_pcie *pcie) { return; }
 #endif
 
 static void tegra_pcie_enable_system_interrupts(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 	u32 val;
 	u16 val_w;
 
@@ -741,7 +741,7 @@ static void tegra_pcie_enable_system_interrupts(struct pcie_port *pp)
 static void tegra_pcie_enable_legacy_interrupts(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 	u32 val;
 
 	/* Enable legacy interrupt generation */
@@ -762,7 +762,7 @@ static void tegra_pcie_enable_legacy_interrupts(struct pcie_port *pp)
 static void tegra_pcie_enable_msi_interrupts(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 	u32 val;
 
 	/* Enable MSI interrupt generation */
@@ -775,7 +775,7 @@ static void tegra_pcie_enable_msi_interrupts(struct pcie_port *pp)
 static void tegra_pcie_enable_interrupts(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 
 	/* Clear interrupt statuses before enabling interrupts */
 	appl_writel(pcie, 0xFFFFFFFF, APPL_INTR_STATUS_L0);
@@ -800,7 +800,7 @@ static void tegra_pcie_enable_interrupts(struct pcie_port *pp)
 		tegra_pcie_enable_msi_interrupts(pp);
 }
 
-static void config_gen3_gen4_eq_presets(struct tegra_pcie_dw *pcie)
+static void config_gen3_gen4_eq_presets(struct tegra194_pcie *pcie)
 {
 	struct dw_pcie *pci = &pcie->pci;
 	u32 val, offset, i;
@@ -853,10 +853,10 @@ static void config_gen3_gen4_eq_presets(struct tegra_pcie_dw *pcie)
 	dw_pcie_writel_dbi(pci, GEN3_RELATED_OFF, val);
 }
 
-static int tegra_pcie_dw_host_init(struct pcie_port *pp)
+static int tegra194_pcie_host_init(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 	u32 val;
 
 	pp->bridge->ops = &tegra_pci_ops;
@@ -914,10 +914,10 @@ static int tegra_pcie_dw_host_init(struct pcie_port *pp)
 	return 0;
 }
 
-static int tegra_pcie_dw_start_link(struct dw_pcie *pci)
+static int tegra194_pcie_start_link(struct dw_pcie *pci)
 {
 	u32 val, offset, speed, tmp;
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 	struct pcie_port *pp = &pci->pp;
 	bool retry = true;
 
@@ -982,7 +982,7 @@ retry_link:
 		val &= ~PCI_DLF_EXCHANGE_ENABLE;
 		dw_pcie_writel_dbi(pci, offset, val);
 
-		tegra_pcie_dw_host_init(pp);
+		tegra194_pcie_host_init(pp);
 		dw_pcie_setup_rc(pp);
 
 		retry = false;
@@ -998,32 +998,32 @@ retry_link:
 	return 0;
 }
 
-static int tegra_pcie_dw_link_up(struct dw_pcie *pci)
+static int tegra194_pcie_link_up(struct dw_pcie *pci)
 {
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 	u32 val = dw_pcie_readw_dbi(pci, pcie->pcie_cap_base + PCI_EXP_LNKSTA);
 
 	return !!(val & PCI_EXP_LNKSTA_DLLLA);
 }
 
-static void tegra_pcie_dw_stop_link(struct dw_pcie *pci)
+static void tegra194_pcie_stop_link(struct dw_pcie *pci)
 {
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 
 	disable_irq(pcie->pex_rst_irq);
 }
 
 static const struct dw_pcie_ops tegra_dw_pcie_ops = {
-	.link_up = tegra_pcie_dw_link_up,
-	.start_link = tegra_pcie_dw_start_link,
-	.stop_link = tegra_pcie_dw_stop_link,
+	.link_up = tegra194_pcie_link_up,
+	.start_link = tegra194_pcie_start_link,
+	.stop_link = tegra194_pcie_stop_link,
 };
 
-static const struct dw_pcie_host_ops tegra_pcie_dw_host_ops = {
-	.host_init = tegra_pcie_dw_host_init,
+static const struct dw_pcie_host_ops tegra194_pcie_host_ops = {
+	.host_init = tegra194_pcie_host_init,
 };
 
-static void tegra_pcie_disable_phy(struct tegra_pcie_dw *pcie)
+static void tegra_pcie_disable_phy(struct tegra194_pcie *pcie)
 {
 	unsigned int phy_count = pcie->phy_count;
 
@@ -1033,7 +1033,7 @@ static void tegra_pcie_disable_phy(struct tegra_pcie_dw *pcie)
 	}
 }
 
-static int tegra_pcie_enable_phy(struct tegra_pcie_dw *pcie)
+static int tegra_pcie_enable_phy(struct tegra194_pcie *pcie)
 {
 	unsigned int i;
 	int ret;
@@ -1060,7 +1060,7 @@ phy_exit:
 	return ret;
 }
 
-static int tegra_pcie_dw_parse_dt(struct tegra_pcie_dw *pcie)
+static int tegra194_pcie_parse_dt(struct tegra194_pcie *pcie)
 {
 	struct platform_device *pdev = to_platform_device(pcie->dev);
 	struct device_node *np = pcie->dev->of_node;
@@ -1156,7 +1156,7 @@ static int tegra_pcie_dw_parse_dt(struct tegra_pcie_dw *pcie)
 	return 0;
 }
 
-static int tegra_pcie_bpmp_set_ctrl_state(struct tegra_pcie_dw *pcie,
+static int tegra_pcie_bpmp_set_ctrl_state(struct tegra194_pcie *pcie,
 					  bool enable)
 {
 	struct mrq_uphy_response resp;
@@ -1184,7 +1184,7 @@ static int tegra_pcie_bpmp_set_ctrl_state(struct tegra_pcie_dw *pcie,
 	return tegra_bpmp_transfer(pcie->bpmp, &msg);
 }
 
-static int tegra_pcie_bpmp_set_pll_state(struct tegra_pcie_dw *pcie,
+static int tegra_pcie_bpmp_set_pll_state(struct tegra194_pcie *pcie,
 					 bool enable)
 {
 	struct mrq_uphy_response resp;
@@ -1212,7 +1212,7 @@ static int tegra_pcie_bpmp_set_pll_state(struct tegra_pcie_dw *pcie,
 	return tegra_bpmp_transfer(pcie->bpmp, &msg);
 }
 
-static void tegra_pcie_downstream_dev_to_D0(struct tegra_pcie_dw *pcie)
+static void tegra_pcie_downstream_dev_to_D0(struct tegra194_pcie *pcie)
 {
 	struct pcie_port *pp = &pcie->pci.pp;
 	struct pci_bus *child, *root_bus = NULL;
@@ -1250,7 +1250,7 @@ static void tegra_pcie_downstream_dev_to_D0(struct tegra_pcie_dw *pcie)
 	}
 }
 
-static int tegra_pcie_get_slot_regulators(struct tegra_pcie_dw *pcie)
+static int tegra_pcie_get_slot_regulators(struct tegra194_pcie *pcie)
 {
 	pcie->slot_ctl_3v3 = devm_regulator_get_optional(pcie->dev, "vpcie3v3");
 	if (IS_ERR(pcie->slot_ctl_3v3)) {
@@ -1271,7 +1271,7 @@ static int tegra_pcie_get_slot_regulators(struct tegra_pcie_dw *pcie)
 	return 0;
 }
 
-static int tegra_pcie_enable_slot_regulators(struct tegra_pcie_dw *pcie)
+static int tegra_pcie_enable_slot_regulators(struct tegra194_pcie *pcie)
 {
 	int ret;
 
@@ -1309,7 +1309,7 @@ fail_12v_enable:
 	return ret;
 }
 
-static void tegra_pcie_disable_slot_regulators(struct tegra_pcie_dw *pcie)
+static void tegra_pcie_disable_slot_regulators(struct tegra194_pcie *pcie)
 {
 	if (pcie->slot_ctl_12v)
 		regulator_disable(pcie->slot_ctl_12v);
@@ -1317,7 +1317,7 @@ static void tegra_pcie_disable_slot_regulators(struct tegra_pcie_dw *pcie)
 		regulator_disable(pcie->slot_ctl_3v3);
 }
 
-static int tegra_pcie_config_controller(struct tegra_pcie_dw *pcie,
+static int tegra_pcie_config_controller(struct tegra194_pcie *pcie,
 					bool en_hw_hot_rst)
 {
 	int ret;
@@ -1414,7 +1414,7 @@ fail_slot_reg_en:
 	return ret;
 }
 
-static void tegra_pcie_unconfig_controller(struct tegra_pcie_dw *pcie)
+static void tegra_pcie_unconfig_controller(struct tegra194_pcie *pcie)
 {
 	int ret;
 
@@ -1442,7 +1442,7 @@ static void tegra_pcie_unconfig_controller(struct tegra_pcie_dw *pcie)
 			pcie->cid, ret);
 }
 
-static int tegra_pcie_init_controller(struct tegra_pcie_dw *pcie)
+static int tegra_pcie_init_controller(struct tegra194_pcie *pcie)
 {
 	struct dw_pcie *pci = &pcie->pci;
 	struct pcie_port *pp = &pci->pp;
@@ -1452,7 +1452,7 @@ static int tegra_pcie_init_controller(struct tegra_pcie_dw *pcie)
 	if (ret < 0)
 		return ret;
 
-	pp->ops = &tegra_pcie_dw_host_ops;
+	pp->ops = &tegra194_pcie_host_ops;
 
 	ret = dw_pcie_host_init(pp);
 	if (ret < 0) {
@@ -1467,11 +1467,11 @@ fail_host_init:
 	return ret;
 }
 
-static int tegra_pcie_try_link_l2(struct tegra_pcie_dw *pcie)
+static int tegra_pcie_try_link_l2(struct tegra194_pcie *pcie)
 {
 	u32 val;
 
-	if (!tegra_pcie_dw_link_up(&pcie->pci))
+	if (!tegra194_pcie_link_up(&pcie->pci))
 		return 0;
 
 	val = appl_readl(pcie, APPL_RADM_STATUS);
@@ -1483,12 +1483,12 @@ static int tegra_pcie_try_link_l2(struct tegra_pcie_dw *pcie)
 				 1, PME_ACK_TIMEOUT);
 }
 
-static void tegra_pcie_dw_pme_turnoff(struct tegra_pcie_dw *pcie)
+static void tegra194_pcie_pme_turnoff(struct tegra194_pcie *pcie)
 {
 	u32 data;
 	int err;
 
-	if (!tegra_pcie_dw_link_up(&pcie->pci)) {
+	if (!tegra194_pcie_link_up(&pcie->pci)) {
 		dev_dbg(pcie->dev, "PCIe link is not up...!\n");
 		return;
 	}
@@ -1545,15 +1545,15 @@ static void tegra_pcie_dw_pme_turnoff(struct tegra_pcie_dw *pcie)
 	appl_writel(pcie, data, APPL_PINMUX);
 }
 
-static void tegra_pcie_deinit_controller(struct tegra_pcie_dw *pcie)
+static void tegra_pcie_deinit_controller(struct tegra194_pcie *pcie)
 {
 	tegra_pcie_downstream_dev_to_D0(pcie);
 	dw_pcie_host_deinit(&pcie->pci.pp);
-	tegra_pcie_dw_pme_turnoff(pcie);
+	tegra194_pcie_pme_turnoff(pcie);
 	tegra_pcie_unconfig_controller(pcie);
 }
 
-static int tegra_pcie_config_rp(struct tegra_pcie_dw *pcie)
+static int tegra_pcie_config_rp(struct tegra194_pcie *pcie)
 {
 	struct device *dev = pcie->dev;
 	char *name;
@@ -1580,7 +1580,7 @@ static int tegra_pcie_config_rp(struct tegra_pcie_dw *pcie)
 		goto fail_pm_get_sync;
 	}
 
-	pcie->link_state = tegra_pcie_dw_link_up(&pcie->pci);
+	pcie->link_state = tegra194_pcie_link_up(&pcie->pci);
 	if (!pcie->link_state) {
 		ret = -ENOMEDIUM;
 		goto fail_host_init;
@@ -1605,7 +1605,7 @@ fail_pm_get_sync:
 	return ret;
 }
 
-static void pex_ep_event_pex_rst_assert(struct tegra_pcie_dw *pcie)
+static void pex_ep_event_pex_rst_assert(struct tegra194_pcie *pcie)
 {
 	u32 val;
 	int ret;
@@ -1644,7 +1644,7 @@ static void pex_ep_event_pex_rst_assert(struct tegra_pcie_dw *pcie)
 	dev_dbg(pcie->dev, "Uninitialization of endpoint is completed\n");
 }
 
-static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie)
+static void pex_ep_event_pex_rst_deassert(struct tegra194_pcie *pcie)
 {
 	struct dw_pcie *pci = &pcie->pci;
 	struct dw_pcie_ep *ep = &pci->ep;
@@ -1809,7 +1809,7 @@ fail_pll_init:
 
 static irqreturn_t tegra_pcie_ep_pex_rst_irq(int irq, void *arg)
 {
-	struct tegra_pcie_dw *pcie = arg;
+	struct tegra194_pcie *pcie = arg;
 
 	if (gpiod_get_value(pcie->pex_rst_gpiod))
 		pex_ep_event_pex_rst_assert(pcie);
@@ -1819,7 +1819,7 @@ static irqreturn_t tegra_pcie_ep_pex_rst_irq(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static int tegra_pcie_ep_raise_legacy_irq(struct tegra_pcie_dw *pcie, u16 irq)
+static int tegra_pcie_ep_raise_legacy_irq(struct tegra194_pcie *pcie, u16 irq)
 {
 	/* Tegra194 supports only INTA */
 	if (irq > 1)
@@ -1831,7 +1831,7 @@ static int tegra_pcie_ep_raise_legacy_irq(struct tegra_pcie_dw *pcie, u16 irq)
 	return 0;
 }
 
-static int tegra_pcie_ep_raise_msi_irq(struct tegra_pcie_dw *pcie, u16 irq)
+static int tegra_pcie_ep_raise_msi_irq(struct tegra194_pcie *pcie, u16 irq)
 {
 	if (unlikely(irq > 31))
 		return -EINVAL;
@@ -1841,7 +1841,7 @@ static int tegra_pcie_ep_raise_msi_irq(struct tegra_pcie_dw *pcie, u16 irq)
 	return 0;
 }
 
-static int tegra_pcie_ep_raise_msix_irq(struct tegra_pcie_dw *pcie, u16 irq)
+static int tegra_pcie_ep_raise_msix_irq(struct tegra194_pcie *pcie, u16 irq)
 {
 	struct dw_pcie_ep *ep = &pcie->pci.ep;
 
@@ -1855,7 +1855,7 @@ static int tegra_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
 				   u16 interrupt_num)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
-	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
+	struct tegra194_pcie *pcie = to_tegra_pcie(pci);
 
 	switch (type) {
 	case PCI_EPC_IRQ_LEGACY:
@@ -1896,7 +1896,7 @@ static const struct dw_pcie_ep_ops pcie_ep_ops = {
 	.get_features = tegra_pcie_ep_get_features,
 };
 
-static int tegra_pcie_config_ep(struct tegra_pcie_dw *pcie,
+static int tegra_pcie_config_ep(struct tegra194_pcie *pcie,
 				struct platform_device *pdev)
 {
 	struct dw_pcie *pci = &pcie->pci;
@@ -1957,12 +1957,12 @@ static int tegra_pcie_config_ep(struct tegra_pcie_dw *pcie,
 	return 0;
 }
 
-static int tegra_pcie_dw_probe(struct platform_device *pdev)
+static int tegra194_pcie_probe(struct platform_device *pdev)
 {
-	const struct tegra_pcie_dw_of_data *data;
+	const struct tegra194_pcie_of_data *data;
 	struct device *dev = &pdev->dev;
 	struct resource *atu_dma_res;
-	struct tegra_pcie_dw *pcie;
+	struct tegra194_pcie *pcie;
 	struct pcie_port *pp;
 	struct dw_pcie *pci;
 	struct phy **phys;
@@ -1988,7 +1988,7 @@ static int tegra_pcie_dw_probe(struct platform_device *pdev)
 	pcie->dev = &pdev->dev;
 	pcie->mode = (enum dw_pcie_device_mode)data->mode;
 
-	ret = tegra_pcie_dw_parse_dt(pcie);
+	ret = tegra194_pcie_parse_dt(pcie);
 	if (ret < 0) {
 		const char *level = KERN_ERR;
 
@@ -2146,9 +2146,9 @@ fail:
 	return ret;
 }
 
-static int tegra_pcie_dw_remove(struct platform_device *pdev)
+static int tegra194_pcie_remove(struct platform_device *pdev)
 {
-	struct tegra_pcie_dw *pcie = platform_get_drvdata(pdev);
+	struct tegra194_pcie *pcie = platform_get_drvdata(pdev);
 
 	if (!pcie->link_state)
 		return 0;
@@ -2164,9 +2164,9 @@ static int tegra_pcie_dw_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int tegra_pcie_dw_suspend_late(struct device *dev)
+static int tegra194_pcie_suspend_late(struct device *dev)
 {
-	struct tegra_pcie_dw *pcie = dev_get_drvdata(dev);
+	struct tegra194_pcie *pcie = dev_get_drvdata(dev);
 	u32 val;
 
 	if (!pcie->link_state)
@@ -2182,9 +2182,9 @@ static int tegra_pcie_dw_suspend_late(struct device *dev)
 	return 0;
 }
 
-static int tegra_pcie_dw_suspend_noirq(struct device *dev)
+static int tegra194_pcie_suspend_noirq(struct device *dev)
 {
-	struct tegra_pcie_dw *pcie = dev_get_drvdata(dev);
+	struct tegra194_pcie *pcie = dev_get_drvdata(dev);
 
 	if (!pcie->link_state)
 		return 0;
@@ -2193,15 +2193,15 @@ static int tegra_pcie_dw_suspend_noirq(struct device *dev)
 	pcie->msi_ctrl_int = dw_pcie_readl_dbi(&pcie->pci,
 					       PORT_LOGIC_MSI_CTRL_INT_0_EN);
 	tegra_pcie_downstream_dev_to_D0(pcie);
-	tegra_pcie_dw_pme_turnoff(pcie);
+	tegra194_pcie_pme_turnoff(pcie);
 	tegra_pcie_unconfig_controller(pcie);
 
 	return 0;
 }
 
-static int tegra_pcie_dw_resume_noirq(struct device *dev)
+static int tegra194_pcie_resume_noirq(struct device *dev)
 {
-	struct tegra_pcie_dw *pcie = dev_get_drvdata(dev);
+	struct tegra194_pcie *pcie = dev_get_drvdata(dev);
 	int ret;
 
 	if (!pcie->link_state)
@@ -2211,7 +2211,7 @@ static int tegra_pcie_dw_resume_noirq(struct device *dev)
 	if (ret < 0)
 		return ret;
 
-	ret = tegra_pcie_dw_host_init(&pcie->pci.pp);
+	ret = tegra194_pcie_host_init(&pcie->pci.pp);
 	if (ret < 0) {
 		dev_err(dev, "Failed to init host: %d\n", ret);
 		goto fail_host_init;
@@ -2219,7 +2219,7 @@ static int tegra_pcie_dw_resume_noirq(struct device *dev)
 
 	dw_pcie_setup_rc(&pcie->pci.pp);
 
-	ret = tegra_pcie_dw_start_link(&pcie->pci);
+	ret = tegra194_pcie_start_link(&pcie->pci);
 	if (ret < 0)
 		goto fail_host_init;
 
@@ -2234,9 +2234,9 @@ fail_host_init:
 	return ret;
 }
 
-static int tegra_pcie_dw_resume_early(struct device *dev)
+static int tegra194_pcie_resume_early(struct device *dev)
 {
-	struct tegra_pcie_dw *pcie = dev_get_drvdata(dev);
+	struct tegra194_pcie *pcie = dev_get_drvdata(dev);
 	u32 val;
 
 	if (pcie->mode == DW_PCIE_EP_TYPE) {
@@ -2259,9 +2259,9 @@ static int tegra_pcie_dw_resume_early(struct device *dev)
 	return 0;
 }
 
-static void tegra_pcie_dw_shutdown(struct platform_device *pdev)
+static void tegra194_pcie_shutdown(struct platform_device *pdev)
 {
-	struct tegra_pcie_dw *pcie = platform_get_drvdata(pdev);
+	struct tegra194_pcie *pcie = platform_get_drvdata(pdev);
 
 	if (!pcie->link_state)
 		return;
@@ -2273,50 +2273,50 @@ static void tegra_pcie_dw_shutdown(struct platform_device *pdev)
 	if (IS_ENABLED(CONFIG_PCI_MSI))
 		disable_irq(pcie->pci.pp.msi_irq);
 
-	tegra_pcie_dw_pme_turnoff(pcie);
+	tegra194_pcie_pme_turnoff(pcie);
 	tegra_pcie_unconfig_controller(pcie);
 }
 
-static const struct tegra_pcie_dw_of_data tegra_pcie_dw_rc_of_data = {
+static const struct tegra194_pcie_of_data tegra194_pcie_rc_of_data = {
 	.mode = DW_PCIE_RC_TYPE,
 };
 
-static const struct tegra_pcie_dw_of_data tegra_pcie_dw_ep_of_data = {
+static const struct tegra194_pcie_of_data tegra194_pcie_ep_of_data = {
 	.mode = DW_PCIE_EP_TYPE,
 };
 
-static const struct of_device_id tegra_pcie_dw_of_match[] = {
+static const struct of_device_id tegra194_pcie_of_match[] = {
 	{
 		.compatible = "nvidia,tegra194-pcie",
-		.data = &tegra_pcie_dw_rc_of_data,
+		.data = &tegra194_pcie_rc_of_data,
 	},
 	{
 		.compatible = "nvidia,tegra194-pcie-ep",
-		.data = &tegra_pcie_dw_ep_of_data,
+		.data = &tegra194_pcie_ep_of_data,
 	},
 	{},
 };
 
-static const struct dev_pm_ops tegra_pcie_dw_pm_ops = {
-	.suspend_late = tegra_pcie_dw_suspend_late,
-	.suspend_noirq = tegra_pcie_dw_suspend_noirq,
-	.resume_noirq = tegra_pcie_dw_resume_noirq,
-	.resume_early = tegra_pcie_dw_resume_early,
+static const struct dev_pm_ops tegra194_pcie_pm_ops = {
+	.suspend_late = tegra194_pcie_suspend_late,
+	.suspend_noirq = tegra194_pcie_suspend_noirq,
+	.resume_noirq = tegra194_pcie_resume_noirq,
+	.resume_early = tegra194_pcie_resume_early,
 };
 
-static struct platform_driver tegra_pcie_dw_driver = {
-	.probe = tegra_pcie_dw_probe,
-	.remove = tegra_pcie_dw_remove,
-	.shutdown = tegra_pcie_dw_shutdown,
+static struct platform_driver tegra194_pcie_driver = {
+	.probe = tegra194_pcie_probe,
+	.remove = tegra194_pcie_remove,
+	.shutdown = tegra194_pcie_shutdown,
 	.driver = {
 		.name	= "tegra194-pcie",
-		.pm = &tegra_pcie_dw_pm_ops,
-		.of_match_table = tegra_pcie_dw_of_match,
+		.pm = &tegra194_pcie_pm_ops,
+		.of_match_table = tegra194_pcie_of_match,
 	},
 };
-module_platform_driver(tegra_pcie_dw_driver);
+module_platform_driver(tegra194_pcie_driver);
 
-MODULE_DEVICE_TABLE(of, tegra_pcie_dw_of_match);
+MODULE_DEVICE_TABLE(of, tegra194_pcie_of_match);
 
 MODULE_AUTHOR("Vidya Sagar <vidyas@nvidia.com>");
 MODULE_DESCRIPTION("NVIDIA PCIe host controller driver");
diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index d05be942956e..b45ac3754242 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -61,9 +61,9 @@
 #define PCL_RDLH_LINK_UP		BIT(1)
 #define PCL_XMLH_LINK_UP		BIT(0)
 
-struct uniphier_pcie_priv {
-	void __iomem *base;
+struct uniphier_pcie {
 	struct dw_pcie pci;
+	void __iomem *base;
 	struct clk *clk;
 	struct reset_control *rst;
 	struct phy *phy;
@@ -72,62 +72,62 @@ struct uniphier_pcie_priv {
 
 #define to_uniphier_pcie(x)	dev_get_drvdata((x)->dev)
 
-static void uniphier_pcie_ltssm_enable(struct uniphier_pcie_priv *priv,
+static void uniphier_pcie_ltssm_enable(struct uniphier_pcie *pcie,
 				       bool enable)
 {
 	u32 val;
 
-	val = readl(priv->base + PCL_APP_READY_CTRL);
+	val = readl(pcie->base + PCL_APP_READY_CTRL);
 	if (enable)
 		val |= PCL_APP_LTSSM_ENABLE;
 	else
 		val &= ~PCL_APP_LTSSM_ENABLE;
-	writel(val, priv->base + PCL_APP_READY_CTRL);
+	writel(val, pcie->base + PCL_APP_READY_CTRL);
 }
 
-static void uniphier_pcie_init_rc(struct uniphier_pcie_priv *priv)
+static void uniphier_pcie_init_rc(struct uniphier_pcie *pcie)
 {
 	u32 val;
 
 	/* set RC MODE */
-	val = readl(priv->base + PCL_MODE);
+	val = readl(pcie->base + PCL_MODE);
 	val |= PCL_MODE_REGEN;
 	val &= ~PCL_MODE_REGVAL;
-	writel(val, priv->base + PCL_MODE);
+	writel(val, pcie->base + PCL_MODE);
 
 	/* use auxiliary power detection */
-	val = readl(priv->base + PCL_APP_PM0);
+	val = readl(pcie->base + PCL_APP_PM0);
 	val |= PCL_SYS_AUX_PWR_DET;
-	writel(val, priv->base + PCL_APP_PM0);
+	writel(val, pcie->base + PCL_APP_PM0);
 
 	/* assert PERST# */
-	val = readl(priv->base + PCL_PINCTRL0);
+	val = readl(pcie->base + PCL_PINCTRL0);
 	val &= ~(PCL_PERST_NOE_REGVAL | PCL_PERST_OUT_REGVAL
 		 | PCL_PERST_PLDN_REGVAL);
 	val |= PCL_PERST_NOE_REGEN | PCL_PERST_OUT_REGEN
 		| PCL_PERST_PLDN_REGEN;
-	writel(val, priv->base + PCL_PINCTRL0);
+	writel(val, pcie->base + PCL_PINCTRL0);
 
-	uniphier_pcie_ltssm_enable(priv, false);
+	uniphier_pcie_ltssm_enable(pcie, false);
 
 	usleep_range(100000, 200000);
 
 	/* deassert PERST# */
-	val = readl(priv->base + PCL_PINCTRL0);
+	val = readl(pcie->base + PCL_PINCTRL0);
 	val |= PCL_PERST_OUT_REGVAL | PCL_PERST_OUT_REGEN;
-	writel(val, priv->base + PCL_PINCTRL0);
+	writel(val, pcie->base + PCL_PINCTRL0);
 }
 
-static int uniphier_pcie_wait_rc(struct uniphier_pcie_priv *priv)
+static int uniphier_pcie_wait_rc(struct uniphier_pcie *pcie)
 {
 	u32 status;
 	int ret;
 
 	/* wait PIPE clock */
-	ret = readl_poll_timeout(priv->base + PCL_PIPEMON, status,
+	ret = readl_poll_timeout(pcie->base + PCL_PIPEMON, status,
 				 status & PCL_PCLK_ALIVE, 100000, 1000000);
 	if (ret) {
-		dev_err(priv->pci.dev,
+		dev_err(pcie->pci.dev,
 			"Failed to initialize controller in RC mode\n");
 		return ret;
 	}
@@ -137,10 +137,10 @@ static int uniphier_pcie_wait_rc(struct uniphier_pcie_priv *priv)
 
 static int uniphier_pcie_link_up(struct dw_pcie *pci)
 {
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 	u32 val, mask;
 
-	val = readl(priv->base + PCL_STATUS_LINK);
+	val = readl(pcie->base + PCL_STATUS_LINK);
 	mask = PCL_RDLH_LINK_UP | PCL_XMLH_LINK_UP;
 
 	return (val & mask) == mask;
@@ -148,39 +148,40 @@ static int uniphier_pcie_link_up(struct dw_pcie *pci)
 
 static int uniphier_pcie_start_link(struct dw_pcie *pci)
 {
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 
-	uniphier_pcie_ltssm_enable(priv, true);
+	uniphier_pcie_ltssm_enable(pcie, true);
 
 	return 0;
 }
 
 static void uniphier_pcie_stop_link(struct dw_pcie *pci)
 {
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 
-	uniphier_pcie_ltssm_enable(priv, false);
+	uniphier_pcie_ltssm_enable(pcie, false);
 }
 
-static void uniphier_pcie_irq_enable(struct uniphier_pcie_priv *priv)
+static void uniphier_pcie_irq_enable(struct uniphier_pcie *pcie)
 {
-	writel(PCL_RCV_INT_ALL_ENABLE, priv->base + PCL_RCV_INT);
-	writel(PCL_RCV_INTX_ALL_ENABLE, priv->base + PCL_RCV_INTX);
+	writel(PCL_RCV_INT_ALL_ENABLE, pcie->base + PCL_RCV_INT);
+	writel(PCL_RCV_INTX_ALL_ENABLE, pcie->base + PCL_RCV_INTX);
 }
 
+
 static void uniphier_pcie_irq_mask(struct irq_data *d)
 {
 	struct pcie_port *pp = irq_data_get_irq_chip_data(d);
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 	unsigned long flags;
 	u32 val;
 
 	raw_spin_lock_irqsave(&pp->lock, flags);
 
-	val = readl(priv->base + PCL_RCV_INTX);
+	val = readl(pcie->base + PCL_RCV_INTX);
 	val |= BIT(irqd_to_hwirq(d) + PCL_RCV_INTX_MASK_SHIFT);
-	writel(val, priv->base + PCL_RCV_INTX);
+	writel(val, pcie->base + PCL_RCV_INTX);
 
 	raw_spin_unlock_irqrestore(&pp->lock, flags);
 }
@@ -189,15 +190,15 @@ static void uniphier_pcie_irq_unmask(struct irq_data *d)
 {
 	struct pcie_port *pp = irq_data_get_irq_chip_data(d);
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 	unsigned long flags;
 	u32 val;
 
 	raw_spin_lock_irqsave(&pp->lock, flags);
 
-	val = readl(priv->base + PCL_RCV_INTX);
+	val = readl(pcie->base + PCL_RCV_INTX);
 	val &= ~BIT(irqd_to_hwirq(d) + PCL_RCV_INTX_MASK_SHIFT);
-	writel(val, priv->base + PCL_RCV_INTX);
+	writel(val, pcie->base + PCL_RCV_INTX);
 
 	raw_spin_unlock_irqrestore(&pp->lock, flags);
 }
@@ -226,13 +227,13 @@ static void uniphier_pcie_irq_handler(struct irq_desc *desc)
 {
 	struct pcie_port *pp = irq_desc_get_handler_data(desc);
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	unsigned long reg;
 	u32 val, bit;
 
 	/* INT for debug */
-	val = readl(priv->base + PCL_RCV_INT);
+	val = readl(pcie->base + PCL_RCV_INT);
 
 	if (val & PCL_CFG_BW_MGT_STATUS)
 		dev_dbg(pci->dev, "Link Bandwidth Management Event\n");
@@ -243,16 +244,16 @@ static void uniphier_pcie_irq_handler(struct irq_desc *desc)
 	if (val & PCL_CFG_PME_MSI_STATUS)
 		dev_dbg(pci->dev, "PME Interrupt\n");
 
-	writel(val, priv->base + PCL_RCV_INT);
+	writel(val, pcie->base + PCL_RCV_INT);
 
 	/* INTx */
 	chained_irq_enter(chip, desc);
 
-	val = readl(priv->base + PCL_RCV_INTX);
+	val = readl(pcie->base + PCL_RCV_INTX);
 	reg = FIELD_GET(PCL_RCV_INTX_ALL_STATUS, val);
 
 	for_each_set_bit(bit, &reg, PCI_NUM_INTX)
-		generic_handle_domain_irq(priv->legacy_irq_domain, bit);
+		generic_handle_domain_irq(pcie->legacy_irq_domain, bit);
 
 	chained_irq_exit(chip, desc);
 }
@@ -260,7 +261,7 @@ static void uniphier_pcie_irq_handler(struct irq_desc *desc)
 static int uniphier_pcie_config_legacy_irq(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 	struct device_node *np = pci->dev->of_node;
 	struct device_node *np_intc;
 	int ret = 0;
@@ -278,9 +279,9 @@ static int uniphier_pcie_config_legacy_irq(struct pcie_port *pp)
 		goto out_put_node;
 	}
 
-	priv->legacy_irq_domain = irq_domain_add_linear(np_intc, PCI_NUM_INTX,
+	pcie->legacy_irq_domain = irq_domain_add_linear(np_intc, PCI_NUM_INTX,
 						&uniphier_intx_domain_ops, pp);
-	if (!priv->legacy_irq_domain) {
+	if (!pcie->legacy_irq_domain) {
 		dev_err(pci->dev, "Failed to get INTx domain\n");
 		ret = -ENODEV;
 		goto out_put_node;
@@ -297,14 +298,14 @@ out_put_node:
 static int uniphier_pcie_host_init(struct pcie_port *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-	struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci);
+	struct uniphier_pcie *pcie = to_uniphier_pcie(pci);
 	int ret;
 
 	ret = uniphier_pcie_config_legacy_irq(pp);
 	if (ret)
 		return ret;
 
-	uniphier_pcie_irq_enable(priv);
+	uniphier_pcie_irq_enable(pcie);
 
 	return 0;
 }
@@ -313,36 +314,36 @@ static const struct dw_pcie_host_ops uniphier_pcie_host_ops = {
 	.host_init = uniphier_pcie_host_init,
 };
 
-static int uniphier_pcie_host_enable(struct uniphier_pcie_priv *priv)
+static int uniphier_pcie_host_enable(struct uniphier_pcie *pcie)
 {
 	int ret;
 
-	ret = clk_prepare_enable(priv->clk);
+	ret = clk_prepare_enable(pcie->clk);
 	if (ret)
 		return ret;
 
-	ret = reset_control_deassert(priv->rst);
+	ret = reset_control_deassert(pcie->rst);
 	if (ret)
 		goto out_clk_disable;
 
-	uniphier_pcie_init_rc(priv);
+	uniphier_pcie_init_rc(pcie);
 
-	ret = phy_init(priv->phy);
+	ret = phy_init(pcie->phy);
 	if (ret)
 		goto out_rst_assert;
 
-	ret = uniphier_pcie_wait_rc(priv);
+	ret = uniphier_pcie_wait_rc(pcie);
 	if (ret)
 		goto out_phy_exit;
 
 	return 0;
 
 out_phy_exit:
-	phy_exit(priv->phy);
+	phy_exit(pcie->phy);
 out_rst_assert:
-	reset_control_assert(priv->rst);
+	reset_control_assert(pcie->rst);
 out_clk_disable:
-	clk_disable_unprepare(priv->clk);
+	clk_disable_unprepare(pcie->clk);
 
 	return ret;
 }
@@ -356,41 +357,41 @@ static const struct dw_pcie_ops dw_pcie_ops = {
 static int uniphier_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct uniphier_pcie_priv *priv;
+	struct uniphier_pcie *pcie;
 	int ret;
 
-	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
+	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
 		return -ENOMEM;
 
-	priv->pci.dev = dev;
-	priv->pci.ops = &dw_pcie_ops;
+	pcie->pci.dev = dev;
+	pcie->pci.ops = &dw_pcie_ops;
 
-	priv->base = devm_platform_ioremap_resource_byname(pdev, "link");
-	if (IS_ERR(priv->base))
-		return PTR_ERR(priv->base);
+	pcie->base = devm_platform_ioremap_resource_byname(pdev, "link");
+	if (IS_ERR(pcie->base))
+		return PTR_ERR(pcie->base);
 
-	priv->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(priv->clk))
-		return PTR_ERR(priv->clk);
+	pcie->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(pcie->clk))
+		return PTR_ERR(pcie->clk);
 
-	priv->rst = devm_reset_control_get_shared(dev, NULL);
-	if (IS_ERR(priv->rst))
-		return PTR_ERR(priv->rst);
+	pcie->rst = devm_reset_control_get_shared(dev, NULL);
+	if (IS_ERR(pcie->rst))
+		return PTR_ERR(pcie->rst);
 
-	priv->phy = devm_phy_optional_get(dev, "pcie-phy");
-	if (IS_ERR(priv->phy))
-		return PTR_ERR(priv->phy);
+	pcie->phy = devm_phy_optional_get(dev, "pcie-phy");
+	if (IS_ERR(pcie->phy))
+		return PTR_ERR(pcie->phy);
 
-	platform_set_drvdata(pdev, priv);
+	platform_set_drvdata(pdev, pcie);
 
-	ret = uniphier_pcie_host_enable(priv);
+	ret = uniphier_pcie_host_enable(pcie);
 	if (ret)
 		return ret;
 
-	priv->pci.pp.ops = &uniphier_pcie_host_ops;
+	pcie->pci.pp.ops = &uniphier_pcie_host_ops;
 
-	return dw_pcie_host_init(&priv->pci.pp);
+	return dw_pcie_host_init(&pcie->pci.pp);
 }
 
 static const struct of_device_id uniphier_pcie_match[] = {
diff --git a/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c
index 306950272fd6..d7b7350f02dd 100644
--- a/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c
+++ b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c
@@ -34,31 +34,31 @@
 #define PF_DBG_WE			BIT(31)
 #define PF_DBG_PABR			BIT(27)
 
-#define to_ls_pcie_g4(x)		platform_get_drvdata((x)->pdev)
+#define to_ls_g4_pcie(x)		platform_get_drvdata((x)->pdev)
 
-struct ls_pcie_g4 {
+struct ls_g4_pcie {
 	struct mobiveil_pcie pci;
 	struct delayed_work dwork;
 	int irq;
 };
 
-static inline u32 ls_pcie_g4_pf_readl(struct ls_pcie_g4 *pcie, u32 off)
+static inline u32 ls_g4_pcie_pf_readl(struct ls_g4_pcie *pcie, u32 off)
 {
 	return ioread32(pcie->pci.csr_axi_slave_base + PCIE_PF_OFF + off);
 }
 
-static inline void ls_pcie_g4_pf_writel(struct ls_pcie_g4 *pcie,
+static inline void ls_g4_pcie_pf_writel(struct ls_g4_pcie *pcie,
 					u32 off, u32 val)
 {
 	iowrite32(val, pcie->pci.csr_axi_slave_base + PCIE_PF_OFF + off);
 }
 
-static int ls_pcie_g4_link_up(struct mobiveil_pcie *pci)
+static int ls_g4_pcie_link_up(struct mobiveil_pcie *pci)
 {
-	struct ls_pcie_g4 *pcie = to_ls_pcie_g4(pci);
+	struct ls_g4_pcie *pcie = to_ls_g4_pcie(pci);
 	u32 state;
 
-	state = ls_pcie_g4_pf_readl(pcie, PCIE_PF_DBG);
+	state = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
 	state =	state & PF_DBG_LTSSM_MASK;
 
 	if (state == PF_DBG_LTSSM_L0)
@@ -67,14 +67,14 @@ static int ls_pcie_g4_link_up(struct mobiveil_pcie *pci)
 	return 0;
 }
 
-static void ls_pcie_g4_disable_interrupt(struct ls_pcie_g4 *pcie)
+static void ls_g4_pcie_disable_interrupt(struct ls_g4_pcie *pcie)
 {
 	struct mobiveil_pcie *mv_pci = &pcie->pci;
 
 	mobiveil_csr_writel(mv_pci, 0, PAB_INTP_AMBA_MISC_ENB);
 }
 
-static void ls_pcie_g4_enable_interrupt(struct ls_pcie_g4 *pcie)
+static void ls_g4_pcie_enable_interrupt(struct ls_g4_pcie *pcie)
 {
 	struct mobiveil_pcie *mv_pci = &pcie->pci;
 	u32 val;
@@ -87,7 +87,7 @@ static void ls_pcie_g4_enable_interrupt(struct ls_pcie_g4 *pcie)
 	mobiveil_csr_writel(mv_pci, val, PAB_INTP_AMBA_MISC_ENB);
 }
 
-static int ls_pcie_g4_reinit_hw(struct ls_pcie_g4 *pcie)
+static int ls_g4_pcie_reinit_hw(struct ls_g4_pcie *pcie)
 {
 	struct mobiveil_pcie *mv_pci = &pcie->pci;
 	struct device *dev = &mv_pci->pdev->dev;
@@ -97,7 +97,7 @@ static int ls_pcie_g4_reinit_hw(struct ls_pcie_g4 *pcie)
 	/* Poll for pab_csb_reset to set and PAB activity to clear */
 	do {
 		usleep_range(10, 15);
-		val = ls_pcie_g4_pf_readl(pcie, PCIE_PF_INT_STAT);
+		val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_INT_STAT);
 		act_stat = mobiveil_csr_readl(mv_pci, PAB_ACTIVITY_STAT);
 	} while (((val & PF_INT_STAT_PABRST) == 0 || act_stat) && to--);
 	if (to < 0) {
@@ -106,22 +106,22 @@ static int ls_pcie_g4_reinit_hw(struct ls_pcie_g4 *pcie)
 	}
 
 	/* clear PEX_RESET bit in PEX_PF0_DBG register */
-	val = ls_pcie_g4_pf_readl(pcie, PCIE_PF_DBG);
+	val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
 	val |= PF_DBG_WE;
-	ls_pcie_g4_pf_writel(pcie, PCIE_PF_DBG, val);
+	ls_g4_pcie_pf_writel(pcie, PCIE_PF_DBG, val);
 
-	val = ls_pcie_g4_pf_readl(pcie, PCIE_PF_DBG);
+	val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
 	val |= PF_DBG_PABR;
-	ls_pcie_g4_pf_writel(pcie, PCIE_PF_DBG, val);
+	ls_g4_pcie_pf_writel(pcie, PCIE_PF_DBG, val);
 
-	val = ls_pcie_g4_pf_readl(pcie, PCIE_PF_DBG);
+	val = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
 	val &= ~PF_DBG_WE;
-	ls_pcie_g4_pf_writel(pcie, PCIE_PF_DBG, val);
+	ls_g4_pcie_pf_writel(pcie, PCIE_PF_DBG, val);
 
 	mobiveil_host_init(mv_pci, true);
 
 	to = 100;
-	while (!ls_pcie_g4_link_up(mv_pci) && to--)
+	while (!ls_g4_pcie_link_up(mv_pci) && to--)
 		usleep_range(200, 250);
 	if (to < 0) {
 		dev_err(dev, "PCIe link training timeout\n");
@@ -131,9 +131,9 @@ static int ls_pcie_g4_reinit_hw(struct ls_pcie_g4 *pcie)
 	return 0;
 }
 
-static irqreturn_t ls_pcie_g4_isr(int irq, void *dev_id)
+static irqreturn_t ls_g4_pcie_isr(int irq, void *dev_id)
 {
-	struct ls_pcie_g4 *pcie = (struct ls_pcie_g4 *)dev_id;
+	struct ls_g4_pcie *pcie = (struct ls_g4_pcie *)dev_id;
 	struct mobiveil_pcie *mv_pci = &pcie->pci;
 	u32 val;
 
@@ -142,7 +142,7 @@ static irqreturn_t ls_pcie_g4_isr(int irq, void *dev_id)
 		return IRQ_NONE;
 
 	if (val & PAB_INTP_RESET) {
-		ls_pcie_g4_disable_interrupt(pcie);
+		ls_g4_pcie_disable_interrupt(pcie);
 		schedule_delayed_work(&pcie->dwork, msecs_to_jiffies(1));
 	}
 
@@ -151,9 +151,9 @@ static irqreturn_t ls_pcie_g4_isr(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int ls_pcie_g4_interrupt_init(struct mobiveil_pcie *mv_pci)
+static int ls_g4_pcie_interrupt_init(struct mobiveil_pcie *mv_pci)
 {
-	struct ls_pcie_g4 *pcie = to_ls_pcie_g4(mv_pci);
+	struct ls_g4_pcie *pcie = to_ls_g4_pcie(mv_pci);
 	struct platform_device *pdev = mv_pci->pdev;
 	struct device *dev = &pdev->dev;
 	int ret;
@@ -162,7 +162,7 @@ static int ls_pcie_g4_interrupt_init(struct mobiveil_pcie *mv_pci)
 	if (pcie->irq < 0)
 		return pcie->irq;
 
-	ret = devm_request_irq(dev, pcie->irq, ls_pcie_g4_isr,
+	ret = devm_request_irq(dev, pcie->irq, ls_g4_pcie_isr,
 			       IRQF_SHARED, pdev->name, pcie);
 	if (ret) {
 		dev_err(dev, "Can't register PCIe IRQ, errno = %d\n", ret);
@@ -172,11 +172,11 @@ static int ls_pcie_g4_interrupt_init(struct mobiveil_pcie *mv_pci)
 	return 0;
 }
 
-static void ls_pcie_g4_reset(struct work_struct *work)
+static void ls_g4_pcie_reset(struct work_struct *work)
 {
 	struct delayed_work *dwork = container_of(work, struct delayed_work,
 						  work);
-	struct ls_pcie_g4 *pcie = container_of(dwork, struct ls_pcie_g4, dwork);
+	struct ls_g4_pcie *pcie = container_of(dwork, struct ls_g4_pcie, dwork);
 	struct mobiveil_pcie *mv_pci = &pcie->pci;
 	u16 ctrl;
 
@@ -184,26 +184,26 @@ static void ls_pcie_g4_reset(struct work_struct *work)
 	ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET;
 	mobiveil_csr_writew(mv_pci, ctrl, PCI_BRIDGE_CONTROL);
 
-	if (!ls_pcie_g4_reinit_hw(pcie))
+	if (!ls_g4_pcie_reinit_hw(pcie))
 		return;
 
-	ls_pcie_g4_enable_interrupt(pcie);
+	ls_g4_pcie_enable_interrupt(pcie);
 }
 
-static struct mobiveil_rp_ops ls_pcie_g4_rp_ops = {
-	.interrupt_init = ls_pcie_g4_interrupt_init,
+static struct mobiveil_rp_ops ls_g4_pcie_rp_ops = {
+	.interrupt_init = ls_g4_pcie_interrupt_init,
 };
 
-static const struct mobiveil_pab_ops ls_pcie_g4_pab_ops = {
-	.link_up = ls_pcie_g4_link_up,
+static const struct mobiveil_pab_ops ls_g4_pcie_pab_ops = {
+	.link_up = ls_g4_pcie_link_up,
 };
 
-static int __init ls_pcie_g4_probe(struct platform_device *pdev)
+static int __init ls_g4_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct pci_host_bridge *bridge;
 	struct mobiveil_pcie *mv_pci;
-	struct ls_pcie_g4 *pcie;
+	struct ls_g4_pcie *pcie;
 	struct device_node *np = dev->of_node;
 	int ret;
 
@@ -220,13 +220,13 @@ static int __init ls_pcie_g4_probe(struct platform_device *pdev)
 	mv_pci = &pcie->pci;
 
 	mv_pci->pdev = pdev;
-	mv_pci->ops = &ls_pcie_g4_pab_ops;
-	mv_pci->rp.ops = &ls_pcie_g4_rp_ops;
+	mv_pci->ops = &ls_g4_pcie_pab_ops;
+	mv_pci->rp.ops = &ls_g4_pcie_rp_ops;
 	mv_pci->rp.bridge = bridge;
 
 	platform_set_drvdata(pdev, pcie);
 
-	INIT_DELAYED_WORK(&pcie->dwork, ls_pcie_g4_reset);
+	INIT_DELAYED_WORK(&pcie->dwork, ls_g4_pcie_reset);
 
 	ret = mobiveil_pcie_host_probe(mv_pci);
 	if (ret) {
@@ -234,22 +234,22 @@ static int __init ls_pcie_g4_probe(struct platform_device *pdev)
 		return  ret;
 	}
 
-	ls_pcie_g4_enable_interrupt(pcie);
+	ls_g4_pcie_enable_interrupt(pcie);
 
 	return 0;
 }
 
-static const struct of_device_id ls_pcie_g4_of_match[] = {
+static const struct of_device_id ls_g4_pcie_of_match[] = {
 	{ .compatible = "fsl,lx2160a-pcie", },
 	{ },
 };
 
-static struct platform_driver ls_pcie_g4_driver = {
+static struct platform_driver ls_g4_pcie_driver = {
 	.driver = {
 		.name = "layerscape-pcie-gen4",
-		.of_match_table = ls_pcie_g4_of_match,
+		.of_match_table = ls_g4_pcie_of_match,
 		.suppress_bind_attrs = true,
 	},
 };
 
-builtin_platform_driver_probe(ls_pcie_g4_driver, ls_pcie_g4_probe);
+builtin_platform_driver_probe(ls_g4_pcie_driver, ls_g4_pcie_probe);
diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index c3b725afa11f..4f5b44827d21 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -115,6 +115,7 @@
 #define PCIE_MSI_ADDR_HIGH_REG			(CONTROL_BASE_ADDR + 0x54)
 #define PCIE_MSI_STATUS_REG			(CONTROL_BASE_ADDR + 0x58)
 #define PCIE_MSI_MASK_REG			(CONTROL_BASE_ADDR + 0x5C)
+#define     PCIE_MSI_ALL_MASK			GENMASK(31, 0)
 #define PCIE_MSI_PAYLOAD_REG			(CONTROL_BASE_ADDR + 0x9C)
 #define     PCIE_MSI_DATA_MASK			GENMASK(15, 0)
 
@@ -570,6 +571,7 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie)
 	advk_writel(pcie, reg, PCIE_CORE_CTRL2_REG);
 
 	/* Clear all interrupts */
+	advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_STATUS_REG);
 	advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_REG);
 	advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_REG);
 	advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG);
@@ -582,7 +584,7 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie)
 	advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_MASK_REG);
 
 	/* Unmask all MSIs */
-	advk_writel(pcie, 0, PCIE_MSI_MASK_REG);
+	advk_writel(pcie, ~(u32)PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG);
 
 	/* Enable summary interrupt for GIC SPI source */
 	reg = PCIE_IRQ_ALL_MASK & (~PCIE_IRQ_ENABLE_INTS_MASK);
@@ -872,11 +874,15 @@ advk_pci_bridge_emul_pcie_conf_read(struct pci_bridge_emul *bridge,
 		return PCI_BRIDGE_EMUL_HANDLED;
 	}
 
-	case PCI_CAP_LIST_ID:
 	case PCI_EXP_DEVCAP:
 	case PCI_EXP_DEVCTL:
+	case PCI_EXP_DEVCAP2:
+	case PCI_EXP_DEVCTL2:
+	case PCI_EXP_LNKCAP2:
+	case PCI_EXP_LNKCTL2:
 		*value = advk_readl(pcie, PCIE_CORE_PCIEXP_CAP + reg);
 		return PCI_BRIDGE_EMUL_HANDLED;
+
 	default:
 		return PCI_BRIDGE_EMUL_NOT_HANDLED;
 	}
@@ -890,10 +896,6 @@ advk_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge,
 	struct advk_pcie *pcie = bridge->data;
 
 	switch (reg) {
-	case PCI_EXP_DEVCTL:
-		advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
-		break;
-
 	case PCI_EXP_LNKCTL:
 		advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
 		if (new & PCI_EXP_LNKCTL_RL)
@@ -915,6 +917,12 @@ advk_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge,
 		advk_writel(pcie, new, PCIE_ISR0_REG);
 		break;
 
+	case PCI_EXP_DEVCTL:
+	case PCI_EXP_DEVCTL2:
+	case PCI_EXP_LNKCTL2:
+		advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
+		break;
+
 	default:
 		break;
 	}
@@ -953,6 +961,9 @@ static int advk_sw_pci_bridge_init(struct advk_pcie *pcie)
 	/* Support interrupt A for MSI feature */
 	bridge->conf.intpin = PCIE_CORE_INT_A_ASSERT_ENABLE;
 
+	/* Aardvark HW provides PCIe Capability structure in version 2 */
+	bridge->pcie_conf.cap = cpu_to_le16(2);
+
 	/* Indicates supports for Completion Retry Status */
 	bridge->pcie_conf.rootcap = cpu_to_le16(PCI_EXP_RTCAP_CRSVIS);
 
@@ -1017,10 +1028,8 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn,
 	u32 reg;
 	int ret;
 
-	if (!advk_pcie_valid_device(pcie, bus, devfn)) {
-		*val = 0xffffffff;
+	if (!advk_pcie_valid_device(pcie, bus, devfn))
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	if (pci_is_root_bus(bus))
 		return pci_bridge_emul_conf_read(&pcie->bridge, where,
@@ -1383,7 +1392,7 @@ static void advk_pcie_handle_msi(struct advk_pcie *pcie)
 
 	msi_mask = advk_readl(pcie, PCIE_MSI_MASK_REG);
 	msi_val = advk_readl(pcie, PCIE_MSI_STATUS_REG);
-	msi_status = msi_val & ~msi_mask;
+	msi_status = msi_val & ((~msi_mask) & PCIE_MSI_ALL_MASK);
 
 	for (msi_idx = 0; msi_idx < MSI_IRQ_NUM; msi_idx++) {
 		if (!(BIT(msi_idx) & msi_status))
@@ -1535,8 +1544,7 @@ static int advk_pcie_probe(struct platform_device *pdev)
 		 * only PIO for issuing configuration transfers which does
 		 * not use PCIe window configuration.
 		 */
-		if (type != IORESOURCE_MEM && type != IORESOURCE_MEM_64 &&
-		    type != IORESOURCE_IO)
+		if (type != IORESOURCE_MEM && type != IORESOURCE_IO)
 			continue;
 
 		/*
@@ -1544,8 +1552,7 @@ static int advk_pcie_probe(struct platform_device *pdev)
 		 * configuration is set to transparent memory access so it
 		 * does not need window configuration.
 		 */
-		if ((type == IORESOURCE_MEM || type == IORESOURCE_MEM_64) &&
-		    entry->offset == 0)
+		if (type == IORESOURCE_MEM && entry->offset == 0)
 			continue;
 
 		/*
@@ -1677,20 +1684,64 @@ static int advk_pcie_remove(struct platform_device *pdev)
 {
 	struct advk_pcie *pcie = platform_get_drvdata(pdev);
 	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
+	u32 val;
 	int i;
 
+	/* Remove PCI bus with all devices */
 	pci_lock_rescan_remove();
 	pci_stop_root_bus(bridge->bus);
 	pci_remove_root_bus(bridge->bus);
 	pci_unlock_rescan_remove();
 
+	/* Disable Root Bridge I/O space, memory space and bus mastering */
+	val = advk_readl(pcie, PCIE_CORE_CMD_STATUS_REG);
+	val &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+	advk_writel(pcie, val, PCIE_CORE_CMD_STATUS_REG);
+
+	/* Disable MSI */
+	val = advk_readl(pcie, PCIE_CORE_CTRL2_REG);
+	val &= ~PCIE_CORE_CTRL2_MSI_ENABLE;
+	advk_writel(pcie, val, PCIE_CORE_CTRL2_REG);
+
+	/* Clear MSI address */
+	advk_writel(pcie, 0, PCIE_MSI_ADDR_LOW_REG);
+	advk_writel(pcie, 0, PCIE_MSI_ADDR_HIGH_REG);
+
+	/* Mask all interrupts */
+	advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG);
+	advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_MASK_REG);
+	advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_MASK_REG);
+	advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_MASK_REG);
+
+	/* Clear all interrupts */
+	advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_STATUS_REG);
+	advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_REG);
+	advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_REG);
+	advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG);
+
+	/* Remove IRQ domains */
 	advk_pcie_remove_msi_irq_domain(pcie);
 	advk_pcie_remove_irq_domain(pcie);
 
+	/* Free config space for emulated root bridge */
+	pci_bridge_emul_cleanup(&pcie->bridge);
+
+	/* Assert PERST# signal which prepares PCIe card for power down */
+	if (pcie->reset_gpio)
+		gpiod_set_value_cansleep(pcie->reset_gpio, 1);
+
+	/* Disable link training */
+	val = advk_readl(pcie, PCIE_CORE_CTRL0_REG);
+	val &= ~LINK_TRAINING_EN;
+	advk_writel(pcie, val, PCIE_CORE_CTRL0_REG);
+
 	/* Disable outbound address windows mapping */
 	for (i = 0; i < OB_WIN_COUNT; i++)
 		advk_pcie_disable_ob_win(pcie, i);
 
+	/* Disable phy */
+	advk_pcie_disable_phy(pcie);
+
 	return 0;
 }
 
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
index 45b6ff8dc665..20ea2ee330b8 100644
--- a/drivers/pci/controller/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
@@ -43,13 +43,12 @@
 #include <linux/pci-ecam.h>
 #include <linux/delay.h>
 #include <linux/semaphore.h>
-#include <linux/irqdomain.h>
-#include <asm/irqdomain.h>
-#include <asm/apic.h>
 #include <linux/irq.h>
 #include <linux/msi.h>
 #include <linux/hyperv.h>
 #include <linux/refcount.h>
+#include <linux/irqdomain.h>
+#include <linux/acpi.h>
 #include <asm/mshyperv.h>
 
 /*
@@ -583,6 +582,265 @@ struct hv_pci_compl {
 
 static void hv_pci_onchannelcallback(void *context);
 
+#ifdef CONFIG_X86
+#define DELIVERY_MODE	APIC_DELIVERY_MODE_FIXED
+#define FLOW_HANDLER	handle_edge_irq
+#define FLOW_NAME	"edge"
+
+static int hv_pci_irqchip_init(void)
+{
+	return 0;
+}
+
+static struct irq_domain *hv_pci_get_root_domain(void)
+{
+	return x86_vector_domain;
+}
+
+static unsigned int hv_msi_get_int_vector(struct irq_data *data)
+{
+	struct irq_cfg *cfg = irqd_cfg(data);
+
+	return cfg->vector;
+}
+
+static void hv_set_msi_entry_from_desc(union hv_msi_entry *msi_entry,
+				       struct msi_desc *msi_desc)
+{
+	msi_entry->address.as_uint32 = msi_desc->msg.address_lo;
+	msi_entry->data.as_uint32 = msi_desc->msg.data;
+}
+
+static int hv_msi_prepare(struct irq_domain *domain, struct device *dev,
+			  int nvec, msi_alloc_info_t *info)
+{
+	return pci_msi_prepare(domain, dev, nvec, info);
+}
+#elif defined(CONFIG_ARM64)
+/*
+ * SPI vectors to use for vPCI; arch SPIs range is [32, 1019], but leaving a bit
+ * of room at the start to allow for SPIs to be specified through ACPI and
+ * starting with a power of two to satisfy power of 2 multi-MSI requirement.
+ */
+#define HV_PCI_MSI_SPI_START	64
+#define HV_PCI_MSI_SPI_NR	(1020 - HV_PCI_MSI_SPI_START)
+#define DELIVERY_MODE		0
+#define FLOW_HANDLER		NULL
+#define FLOW_NAME		NULL
+#define hv_msi_prepare		NULL
+
+struct hv_pci_chip_data {
+	DECLARE_BITMAP(spi_map, HV_PCI_MSI_SPI_NR);
+	struct mutex	map_lock;
+};
+
+/* Hyper-V vPCI MSI GIC IRQ domain */
+static struct irq_domain *hv_msi_gic_irq_domain;
+
+/* Hyper-V PCI MSI IRQ chip */
+static struct irq_chip hv_arm64_msi_irq_chip = {
+	.name = "MSI",
+	.irq_set_affinity = irq_chip_set_affinity_parent,
+	.irq_eoi = irq_chip_eoi_parent,
+	.irq_mask = irq_chip_mask_parent,
+	.irq_unmask = irq_chip_unmask_parent
+};
+
+static unsigned int hv_msi_get_int_vector(struct irq_data *irqd)
+{
+	return irqd->parent_data->hwirq;
+}
+
+static void hv_set_msi_entry_from_desc(union hv_msi_entry *msi_entry,
+				       struct msi_desc *msi_desc)
+{
+	msi_entry->address = ((u64)msi_desc->msg.address_hi << 32) |
+			      msi_desc->msg.address_lo;
+	msi_entry->data = msi_desc->msg.data;
+}
+
+/*
+ * @nr_bm_irqs:		Indicates the number of IRQs that were allocated from
+ *			the bitmap.
+ * @nr_dom_irqs:	Indicates the number of IRQs that were allocated from
+ *			the parent domain.
+ */
+static void hv_pci_vec_irq_free(struct irq_domain *domain,
+				unsigned int virq,
+				unsigned int nr_bm_irqs,
+				unsigned int nr_dom_irqs)
+{
+	struct hv_pci_chip_data *chip_data = domain->host_data;
+	struct irq_data *d = irq_domain_get_irq_data(domain, virq);
+	int first = d->hwirq - HV_PCI_MSI_SPI_START;
+	int i;
+
+	mutex_lock(&chip_data->map_lock);
+	bitmap_release_region(chip_data->spi_map,
+			      first,
+			      get_count_order(nr_bm_irqs));
+	mutex_unlock(&chip_data->map_lock);
+	for (i = 0; i < nr_dom_irqs; i++) {
+		if (i)
+			d = irq_domain_get_irq_data(domain, virq + i);
+		irq_domain_reset_irq_data(d);
+	}
+
+	irq_domain_free_irqs_parent(domain, virq, nr_dom_irqs);
+}
+
+static void hv_pci_vec_irq_domain_free(struct irq_domain *domain,
+				       unsigned int virq,
+				       unsigned int nr_irqs)
+{
+	hv_pci_vec_irq_free(domain, virq, nr_irqs, nr_irqs);
+}
+
+static int hv_pci_vec_alloc_device_irq(struct irq_domain *domain,
+				       unsigned int nr_irqs,
+				       irq_hw_number_t *hwirq)
+{
+	struct hv_pci_chip_data *chip_data = domain->host_data;
+	int index;
+
+	/* Find and allocate region from the SPI bitmap */
+	mutex_lock(&chip_data->map_lock);
+	index = bitmap_find_free_region(chip_data->spi_map,
+					HV_PCI_MSI_SPI_NR,
+					get_count_order(nr_irqs));
+	mutex_unlock(&chip_data->map_lock);
+	if (index < 0)
+		return -ENOSPC;
+
+	*hwirq = index + HV_PCI_MSI_SPI_START;
+
+	return 0;
+}
+
+static int hv_pci_vec_irq_gic_domain_alloc(struct irq_domain *domain,
+					   unsigned int virq,
+					   irq_hw_number_t hwirq)
+{
+	struct irq_fwspec fwspec;
+	struct irq_data *d;
+	int ret;
+
+	fwspec.fwnode = domain->parent->fwnode;
+	fwspec.param_count = 2;
+	fwspec.param[0] = hwirq;
+	fwspec.param[1] = IRQ_TYPE_EDGE_RISING;
+
+	ret = irq_domain_alloc_irqs_parent(domain, virq, 1, &fwspec);
+	if (ret)
+		return ret;
+
+	/*
+	 * Since the interrupt specifier is not coming from ACPI or DT, the
+	 * trigger type will need to be set explicitly. Otherwise, it will be
+	 * set to whatever is in the GIC configuration.
+	 */
+	d = irq_domain_get_irq_data(domain->parent, virq);
+
+	return d->chip->irq_set_type(d, IRQ_TYPE_EDGE_RISING);
+}
+
+static int hv_pci_vec_irq_domain_alloc(struct irq_domain *domain,
+				       unsigned int virq, unsigned int nr_irqs,
+				       void *args)
+{
+	irq_hw_number_t hwirq;
+	unsigned int i;
+	int ret;
+
+	ret = hv_pci_vec_alloc_device_irq(domain, nr_irqs, &hwirq);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < nr_irqs; i++) {
+		ret = hv_pci_vec_irq_gic_domain_alloc(domain, virq + i,
+						      hwirq + i);
+		if (ret) {
+			hv_pci_vec_irq_free(domain, virq, nr_irqs, i);
+			return ret;
+		}
+
+		irq_domain_set_hwirq_and_chip(domain, virq + i,
+					      hwirq + i,
+					      &hv_arm64_msi_irq_chip,
+					      domain->host_data);
+		pr_debug("pID:%d vID:%u\n", (int)(hwirq + i), virq + i);
+	}
+
+	return 0;
+}
+
+/*
+ * Pick the first cpu as the irq affinity that can be temporarily used for
+ * composing MSI from the hypervisor. GIC will eventually set the right
+ * affinity for the irq and the 'unmask' will retarget the interrupt to that
+ * cpu.
+ */
+static int hv_pci_vec_irq_domain_activate(struct irq_domain *domain,
+					  struct irq_data *irqd, bool reserve)
+{
+	int cpu = cpumask_first(cpu_present_mask);
+
+	irq_data_update_effective_affinity(irqd, cpumask_of(cpu));
+
+	return 0;
+}
+
+static const struct irq_domain_ops hv_pci_domain_ops = {
+	.alloc	= hv_pci_vec_irq_domain_alloc,
+	.free	= hv_pci_vec_irq_domain_free,
+	.activate = hv_pci_vec_irq_domain_activate,
+};
+
+static int hv_pci_irqchip_init(void)
+{
+	static struct hv_pci_chip_data *chip_data;
+	struct fwnode_handle *fn = NULL;
+	int ret = -ENOMEM;
+
+	chip_data = kzalloc(sizeof(*chip_data), GFP_KERNEL);
+	if (!chip_data)
+		return ret;
+
+	mutex_init(&chip_data->map_lock);
+	fn = irq_domain_alloc_named_fwnode("hv_vpci_arm64");
+	if (!fn)
+		goto free_chip;
+
+	/*
+	 * IRQ domain once enabled, should not be removed since there is no
+	 * way to ensure that all the corresponding devices are also gone and
+	 * no interrupts will be generated.
+	 */
+	hv_msi_gic_irq_domain = acpi_irq_create_hierarchy(0, HV_PCI_MSI_SPI_NR,
+							  fn, &hv_pci_domain_ops,
+							  chip_data);
+
+	if (!hv_msi_gic_irq_domain) {
+		pr_err("Failed to create Hyper-V arm64 vPCI MSI IRQ domain\n");
+		goto free_chip;
+	}
+
+	return 0;
+
+free_chip:
+	kfree(chip_data);
+	if (fn)
+		irq_domain_free_fwnode(fn);
+
+	return ret;
+}
+
+static struct irq_domain *hv_pci_get_root_domain(void)
+{
+	return hv_msi_gic_irq_domain;
+}
+#endif /* CONFIG_ARM64 */
+
 /**
  * hv_pci_generic_compl() - Invoked for a completion packet
  * @context:		Set up by the sender of the packet.
@@ -1191,17 +1449,11 @@ static void hv_msi_free(struct irq_domain *domain, struct msi_domain_info *info,
 	put_pcichild(hpdev);
 }
 
-static int hv_set_affinity(struct irq_data *data, const struct cpumask *dest,
-			   bool force)
-{
-	struct irq_data *parent = data->parent_data;
-
-	return parent->chip->irq_set_affinity(parent, dest, force);
-}
-
 static void hv_irq_mask(struct irq_data *data)
 {
 	pci_msi_mask_irq(data);
+	if (data->parent_data->chip->irq_mask)
+		irq_chip_mask_parent(data);
 }
 
 /**
@@ -1217,7 +1469,6 @@ static void hv_irq_mask(struct irq_data *data)
 static void hv_irq_unmask(struct irq_data *data)
 {
 	struct msi_desc *msi_desc = irq_data_get_msi_desc(data);
-	struct irq_cfg *cfg = irqd_cfg(data);
 	struct hv_retarget_device_interrupt *params;
 	struct hv_pcibus_device *hbus;
 	struct cpumask *dest;
@@ -1246,7 +1497,7 @@ static void hv_irq_unmask(struct irq_data *data)
 			   (hbus->hdev->dev_instance.b[7] << 8) |
 			   (hbus->hdev->dev_instance.b[6] & 0xf8) |
 			   PCI_FUNC(pdev->devfn);
-	params->int_target.vector = cfg->vector;
+	params->int_target.vector = hv_msi_get_int_vector(data);
 
 	/*
 	 * Honoring apic->delivery_mode set to APIC_DELIVERY_MODE_FIXED by
@@ -1319,6 +1570,8 @@ exit_unlock:
 		dev_err(&hbus->hdev->device,
 			"%s() failed: %#llx", __func__, res);
 
+	if (data->parent_data->chip->irq_unmask)
+		irq_chip_unmask_parent(data);
 	pci_msi_unmask_irq(data);
 }
 
@@ -1347,7 +1600,7 @@ static u32 hv_compose_msi_req_v1(
 	int_pkt->wslot.slot = slot;
 	int_pkt->int_desc.vector = vector;
 	int_pkt->int_desc.vector_count = 1;
-	int_pkt->int_desc.delivery_mode = APIC_DELIVERY_MODE_FIXED;
+	int_pkt->int_desc.delivery_mode = DELIVERY_MODE;
 
 	/*
 	 * Create MSI w/ dummy vCPU set, overwritten by subsequent retarget in
@@ -1377,7 +1630,7 @@ static u32 hv_compose_msi_req_v2(
 	int_pkt->wslot.slot = slot;
 	int_pkt->int_desc.vector = vector;
 	int_pkt->int_desc.vector_count = 1;
-	int_pkt->int_desc.delivery_mode = APIC_DELIVERY_MODE_FIXED;
+	int_pkt->int_desc.delivery_mode = DELIVERY_MODE;
 	cpu = hv_compose_msi_req_get_cpu(affinity);
 	int_pkt->int_desc.processor_array[0] =
 		hv_cpu_number_to_vp_number(cpu);
@@ -1397,7 +1650,7 @@ static u32 hv_compose_msi_req_v3(
 	int_pkt->int_desc.vector = vector;
 	int_pkt->int_desc.reserved = 0;
 	int_pkt->int_desc.vector_count = 1;
-	int_pkt->int_desc.delivery_mode = APIC_DELIVERY_MODE_FIXED;
+	int_pkt->int_desc.delivery_mode = DELIVERY_MODE;
 	cpu = hv_compose_msi_req_get_cpu(affinity);
 	int_pkt->int_desc.processor_array[0] =
 		hv_cpu_number_to_vp_number(cpu);
@@ -1419,7 +1672,6 @@ static u32 hv_compose_msi_req_v3(
  */
 static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 {
-	struct irq_cfg *cfg = irqd_cfg(data);
 	struct hv_pcibus_device *hbus;
 	struct vmbus_channel *channel;
 	struct hv_pci_dev *hpdev;
@@ -1470,7 +1722,7 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 		size = hv_compose_msi_req_v1(&ctxt.int_pkts.v1,
 					dest,
 					hpdev->desc.win_slot.slot,
-					cfg->vector);
+					hv_msi_get_int_vector(data));
 		break;
 
 	case PCI_PROTOCOL_VERSION_1_2:
@@ -1478,14 +1730,14 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 		size = hv_compose_msi_req_v2(&ctxt.int_pkts.v2,
 					dest,
 					hpdev->desc.win_slot.slot,
-					cfg->vector);
+					hv_msi_get_int_vector(data));
 		break;
 
 	case PCI_PROTOCOL_VERSION_1_4:
 		size = hv_compose_msi_req_v3(&ctxt.int_pkts.v3,
 					dest,
 					hpdev->desc.win_slot.slot,
-					cfg->vector);
+					hv_msi_get_int_vector(data));
 		break;
 
 	default:
@@ -1594,14 +1846,18 @@ return_null_message:
 static struct irq_chip hv_msi_irq_chip = {
 	.name			= "Hyper-V PCIe MSI",
 	.irq_compose_msi_msg	= hv_compose_msi_msg,
-	.irq_set_affinity	= hv_set_affinity,
+	.irq_set_affinity	= irq_chip_set_affinity_parent,
+#ifdef CONFIG_X86
 	.irq_ack		= irq_chip_ack_parent,
+#elif defined(CONFIG_ARM64)
+	.irq_eoi		= irq_chip_eoi_parent,
+#endif
 	.irq_mask		= hv_irq_mask,
 	.irq_unmask		= hv_irq_unmask,
 };
 
 static struct msi_domain_ops hv_msi_ops = {
-	.msi_prepare	= pci_msi_prepare,
+	.msi_prepare	= hv_msi_prepare,
 	.msi_free	= hv_msi_free,
 };
 
@@ -1625,12 +1881,12 @@ static int hv_pcie_init_irq_domain(struct hv_pcibus_device *hbus)
 	hbus->msi_info.flags = (MSI_FLAG_USE_DEF_DOM_OPS |
 		MSI_FLAG_USE_DEF_CHIP_OPS | MSI_FLAG_MULTI_PCI_MSI |
 		MSI_FLAG_PCI_MSIX);
-	hbus->msi_info.handler = handle_edge_irq;
-	hbus->msi_info.handler_name = "edge";
+	hbus->msi_info.handler = FLOW_HANDLER;
+	hbus->msi_info.handler_name = FLOW_NAME;
 	hbus->msi_info.data = hbus;
 	hbus->irq_domain = pci_msi_create_irq_domain(hbus->fwnode,
 						     &hbus->msi_info,
-						     x86_vector_domain);
+						     hv_pci_get_root_domain());
 	if (!hbus->irq_domain) {
 		dev_err(&hbus->hdev->device,
 			"Failed to build an MSI IRQ domain\n");
@@ -1774,7 +2030,7 @@ static void prepopulate_bars(struct hv_pcibus_device *hbus)
 	 * If the memory enable bit is already set, Hyper-V silently ignores
 	 * the below BAR updates, and the related PCI device driver can not
 	 * work, because reading from the device register(s) always returns
-	 * 0xFFFFFFFF.
+	 * 0xFFFFFFFF (PCI_ERROR_RESPONSE).
 	 */
 	list_for_each_entry(hpdev, &hbus->children, list_entry) {
 		_hv_pcifront_read_config(hpdev, PCI_COMMAND, 2, &command);
@@ -3547,9 +3803,15 @@ static void __exit exit_hv_pci_drv(void)
 
 static int __init init_hv_pci_drv(void)
 {
+	int ret;
+
 	if (!hv_is_hyperv_initialized())
 		return -ENODEV;
 
+	ret = hv_pci_irqchip_init();
+	if (ret)
+		return ret;
+
 	/* Set the invalid domain number's bit, so it will not be used */
 	set_bit(HVPCI_DOM_INVALID, hvpci_dom_map);
 
diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index ed13e81cd691..71258ea3d35f 100644
--- a/drivers/pci/controller/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
@@ -51,10 +52,14 @@
 	 PCIE_CONF_FUNC(PCI_FUNC(devfn)) | PCIE_CONF_REG(where) | \
 	 PCIE_CONF_ADDR_EN)
 #define PCIE_CONF_DATA_OFF	0x18fc
+#define PCIE_INT_CAUSE_OFF	0x1900
+#define  PCIE_INT_PM_PME		BIT(28)
 #define PCIE_MASK_OFF		0x1910
 #define  PCIE_MASK_ENABLE_INTS          0x0f000000
 #define PCIE_CTRL_OFF		0x1a00
 #define  PCIE_CTRL_X1_MODE		0x0001
+#define  PCIE_CTRL_RC_MODE		BIT(1)
+#define  PCIE_CTRL_MASTER_HOT_RESET	BIT(24)
 #define PCIE_STAT_OFF		0x1a04
 #define  PCIE_STAT_BUS                  0xff00
 #define  PCIE_STAT_DEV                  0x1f0000
@@ -125,6 +130,11 @@ static bool mvebu_pcie_link_up(struct mvebu_pcie_port *port)
 	return !(mvebu_readl(port, PCIE_STAT_OFF) & PCIE_STAT_LINK_DOWN);
 }
 
+static u8 mvebu_pcie_get_local_bus_nr(struct mvebu_pcie_port *port)
+{
+	return (mvebu_readl(port, PCIE_STAT_OFF) & PCIE_STAT_BUS) >> 8;
+}
+
 static void mvebu_pcie_set_local_bus_nr(struct mvebu_pcie_port *port, int nr)
 {
 	u32 stat;
@@ -145,22 +155,13 @@ static void mvebu_pcie_set_local_dev_nr(struct mvebu_pcie_port *port, int nr)
 	mvebu_writel(port, stat, PCIE_STAT_OFF);
 }
 
-/*
- * Setup PCIE BARs and Address Decode Wins:
- * BAR[0] -> internal registers (needed for MSI)
- * BAR[1] -> covers all DRAM banks
- * BAR[2] -> Disabled
- * WIN[0-3] -> DRAM bank[0-3]
- */
-static void mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
+static void mvebu_pcie_disable_wins(struct mvebu_pcie_port *port)
 {
-	const struct mbus_dram_target_info *dram;
-	u32 size;
 	int i;
 
-	dram = mv_mbus_dram_info();
+	mvebu_writel(port, 0, PCIE_BAR_LO_OFF(0));
+	mvebu_writel(port, 0, PCIE_BAR_HI_OFF(0));
 
-	/* First, disable and clear BARs and windows. */
 	for (i = 1; i < 3; i++) {
 		mvebu_writel(port, 0, PCIE_BAR_CTRL_OFF(i));
 		mvebu_writel(port, 0, PCIE_BAR_LO_OFF(i));
@@ -176,6 +177,25 @@ static void mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
 	mvebu_writel(port, 0, PCIE_WIN5_CTRL_OFF);
 	mvebu_writel(port, 0, PCIE_WIN5_BASE_OFF);
 	mvebu_writel(port, 0, PCIE_WIN5_REMAP_OFF);
+}
+
+/*
+ * Setup PCIE BARs and Address Decode Wins:
+ * BAR[0] -> internal registers (needed for MSI)
+ * BAR[1] -> covers all DRAM banks
+ * BAR[2] -> Disabled
+ * WIN[0-3] -> DRAM bank[0-3]
+ */
+static void mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
+{
+	const struct mbus_dram_target_info *dram;
+	u32 size;
+	int i;
+
+	dram = mv_mbus_dram_info();
+
+	/* First, disable and clear BARs and windows. */
+	mvebu_pcie_disable_wins(port);
 
 	/* Setup windows for DDR banks.  Count total DDR size on the fly. */
 	size = 0;
@@ -213,18 +233,47 @@ static void mvebu_pcie_setup_wins(struct mvebu_pcie_port *port)
 
 static void mvebu_pcie_setup_hw(struct mvebu_pcie_port *port)
 {
-	u32 cmd, mask;
+	u32 ctrl, cmd, dev_rev, mask;
 
-	/* Point PCIe unit MBUS decode windows to DRAM space. */
-	mvebu_pcie_setup_wins(port);
+	/* Setup PCIe controller to Root Complex mode. */
+	ctrl = mvebu_readl(port, PCIE_CTRL_OFF);
+	ctrl |= PCIE_CTRL_RC_MODE;
+	mvebu_writel(port, ctrl, PCIE_CTRL_OFF);
 
-	/* Master + slave enable. */
+	/* Disable Root Bridge I/O space, memory space and bus mastering. */
 	cmd = mvebu_readl(port, PCIE_CMD_OFF);
-	cmd |= PCI_COMMAND_IO;
-	cmd |= PCI_COMMAND_MEMORY;
-	cmd |= PCI_COMMAND_MASTER;
+	cmd &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
 	mvebu_writel(port, cmd, PCIE_CMD_OFF);
 
+	/*
+	 * Change Class Code of PCI Bridge device to PCI Bridge (0x6004)
+	 * because default value is Memory controller (0x5080).
+	 *
+	 * Note that this mvebu PCI Bridge does not have compliant Type 1
+	 * Configuration Space. Header Type is reported as Type 0 and it
+	 * has format of Type 0 config space.
+	 *
+	 * Moreover Type 0 BAR registers (ranges 0x10 - 0x28 and 0x30 - 0x34)
+	 * have the same format in Marvell's specification as in PCIe
+	 * specification, but their meaning is totally different and they do
+	 * different things: they are aliased into internal mvebu registers
+	 * (e.g. PCIE_BAR_LO_OFF) and these should not be changed or
+	 * reconfigured by pci device drivers.
+	 *
+	 * Therefore driver uses emulation of PCI Bridge which emulates
+	 * access to configuration space via internal mvebu registers or
+	 * emulated configuration buffer. Driver access these PCI Bridge
+	 * directly for simplification, but these registers can be accessed
+	 * also via standard mvebu way for accessing PCI config space.
+	 */
+	dev_rev = mvebu_readl(port, PCIE_DEV_REV_OFF);
+	dev_rev &= ~0xffffff00;
+	dev_rev |= (PCI_CLASS_BRIDGE_PCI << 8) << 8;
+	mvebu_writel(port, dev_rev, PCIE_DEV_REV_OFF);
+
+	/* Point PCIe unit MBUS decode windows to DRAM space. */
+	mvebu_pcie_setup_wins(port);
+
 	/* Enable interrupt lines A-D. */
 	mask = mvebu_readl(port, PCIE_MASK_OFF);
 	mask |= PCIE_MASK_ENABLE_INTS;
@@ -250,6 +299,9 @@ static int mvebu_pcie_hw_rd_conf(struct mvebu_pcie_port *port,
 	case 4:
 		*val = readl_relaxed(conf_data);
 		break;
+	default:
+		*val = 0xffffffff;
+		return PCIBIOS_BAD_REGISTER_NUMBER;
 	}
 
 	return PCIBIOS_SUCCESSFUL;
@@ -303,7 +355,7 @@ static void mvebu_pcie_del_windows(struct mvebu_pcie_port *port,
  * areas each having a power of two size. We start from the largest
  * one (i.e highest order bit set in the size).
  */
-static void mvebu_pcie_add_windows(struct mvebu_pcie_port *port,
+static int mvebu_pcie_add_windows(struct mvebu_pcie_port *port,
 				   unsigned int target, unsigned int attribute,
 				   phys_addr_t base, size_t size,
 				   phys_addr_t remap)
@@ -324,7 +376,7 @@ static void mvebu_pcie_add_windows(struct mvebu_pcie_port *port,
 				&base, &end, ret);
 			mvebu_pcie_del_windows(port, base - size_mapped,
 					       size_mapped);
-			return;
+			return ret;
 		}
 
 		size -= sz;
@@ -333,16 +385,20 @@ static void mvebu_pcie_add_windows(struct mvebu_pcie_port *port,
 		if (remap != MVEBU_MBUS_NO_REMAP)
 			remap += sz;
 	}
+
+	return 0;
 }
 
-static void mvebu_pcie_set_window(struct mvebu_pcie_port *port,
+static int mvebu_pcie_set_window(struct mvebu_pcie_port *port,
 				  unsigned int target, unsigned int attribute,
 				  const struct mvebu_pcie_window *desired,
 				  struct mvebu_pcie_window *cur)
 {
+	int ret;
+
 	if (desired->base == cur->base && desired->remap == cur->remap &&
 	    desired->size == cur->size)
-		return;
+		return 0;
 
 	if (cur->size != 0) {
 		mvebu_pcie_del_windows(port, cur->base, cur->size);
@@ -357,31 +413,35 @@ static void mvebu_pcie_set_window(struct mvebu_pcie_port *port,
 	}
 
 	if (desired->size == 0)
-		return;
+		return 0;
+
+	ret = mvebu_pcie_add_windows(port, target, attribute, desired->base,
+				     desired->size, desired->remap);
+	if (ret) {
+		cur->size = 0;
+		cur->base = 0;
+		return ret;
+	}
 
-	mvebu_pcie_add_windows(port, target, attribute, desired->base,
-			       desired->size, desired->remap);
 	*cur = *desired;
+	return 0;
 }
 
-static void mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port)
+static int mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port)
 {
 	struct mvebu_pcie_window desired = {};
 	struct pci_bridge_emul_conf *conf = &port->bridge.conf;
 
 	/* Are the new iobase/iolimit values invalid? */
 	if (conf->iolimit < conf->iobase ||
-	    conf->iolimitupper < conf->iobaseupper ||
-	    !(conf->command & PCI_COMMAND_IO)) {
-		mvebu_pcie_set_window(port, port->io_target, port->io_attr,
-				      &desired, &port->iowin);
-		return;
-	}
+	    conf->iolimitupper < conf->iobaseupper)
+		return mvebu_pcie_set_window(port, port->io_target, port->io_attr,
+					     &desired, &port->iowin);
 
 	if (!mvebu_has_ioport(port)) {
 		dev_WARN(&port->pcie->pdev->dev,
 			 "Attempt to set IO when IO is disabled\n");
-		return;
+		return -EOPNOTSUPP;
 	}
 
 	/*
@@ -399,22 +459,19 @@ static void mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port)
 			desired.remap) +
 		       1;
 
-	mvebu_pcie_set_window(port, port->io_target, port->io_attr, &desired,
-			      &port->iowin);
+	return mvebu_pcie_set_window(port, port->io_target, port->io_attr, &desired,
+				     &port->iowin);
 }
 
-static void mvebu_pcie_handle_membase_change(struct mvebu_pcie_port *port)
+static int mvebu_pcie_handle_membase_change(struct mvebu_pcie_port *port)
 {
 	struct mvebu_pcie_window desired = {.remap = MVEBU_MBUS_NO_REMAP};
 	struct pci_bridge_emul_conf *conf = &port->bridge.conf;
 
 	/* Are the new membase/memlimit values invalid? */
-	if (conf->memlimit < conf->membase ||
-	    !(conf->command & PCI_COMMAND_MEMORY)) {
-		mvebu_pcie_set_window(port, port->mem_target, port->mem_attr,
-				      &desired, &port->memwin);
-		return;
-	}
+	if (conf->memlimit < conf->membase)
+		return mvebu_pcie_set_window(port, port->mem_target, port->mem_attr,
+					     &desired, &port->memwin);
 
 	/*
 	 * We read the PCI-to-PCI bridge emulated registers, and
@@ -426,8 +483,56 @@ static void mvebu_pcie_handle_membase_change(struct mvebu_pcie_port *port)
 	desired.size = (((conf->memlimit & 0xFFF0) << 16) | 0xFFFFF) -
 		       desired.base + 1;
 
-	mvebu_pcie_set_window(port, port->mem_target, port->mem_attr, &desired,
-			      &port->memwin);
+	return mvebu_pcie_set_window(port, port->mem_target, port->mem_attr, &desired,
+				     &port->memwin);
+}
+
+static pci_bridge_emul_read_status_t
+mvebu_pci_bridge_emul_base_conf_read(struct pci_bridge_emul *bridge,
+				     int reg, u32 *value)
+{
+	struct mvebu_pcie_port *port = bridge->data;
+
+	switch (reg) {
+	case PCI_COMMAND:
+		*value = mvebu_readl(port, PCIE_CMD_OFF);
+		break;
+
+	case PCI_PRIMARY_BUS: {
+		/*
+		 * From the whole 32bit register we support reading from HW only
+		 * secondary bus number which is mvebu local bus number.
+		 * Other bits are retrieved only from emulated config buffer.
+		 */
+		__le32 *cfgspace = (__le32 *)&bridge->conf;
+		u32 val = le32_to_cpu(cfgspace[PCI_PRIMARY_BUS / 4]);
+		val &= ~0xff00;
+		val |= mvebu_pcie_get_local_bus_nr(port) << 8;
+		*value = val;
+		break;
+	}
+
+	case PCI_INTERRUPT_LINE: {
+		/*
+		 * From the whole 32bit register we support reading from HW only
+		 * one bit: PCI_BRIDGE_CTL_BUS_RESET.
+		 * Other bits are retrieved only from emulated config buffer.
+		 */
+		__le32 *cfgspace = (__le32 *)&bridge->conf;
+		u32 val = le32_to_cpu(cfgspace[PCI_INTERRUPT_LINE / 4]);
+		if (mvebu_readl(port, PCIE_CTRL_OFF) & PCIE_CTRL_MASTER_HOT_RESET)
+			val |= PCI_BRIDGE_CTL_BUS_RESET << 16;
+		else
+			val &= ~(PCI_BRIDGE_CTL_BUS_RESET << 16);
+		*value = val;
+		break;
+	}
+
+	default:
+		return PCI_BRIDGE_EMUL_NOT_HANDLED;
+	}
+
+	return PCI_BRIDGE_EMUL_HANDLED;
 }
 
 static pci_bridge_emul_read_status_t
@@ -442,9 +547,7 @@ mvebu_pci_bridge_emul_pcie_conf_read(struct pci_bridge_emul *bridge,
 		break;
 
 	case PCI_EXP_DEVCTL:
-		*value = mvebu_readl(port, PCIE_CAP_PCIEXP + PCI_EXP_DEVCTL) &
-				 ~(PCI_EXP_DEVCTL_URRE | PCI_EXP_DEVCTL_FERE |
-				   PCI_EXP_DEVCTL_NFERE | PCI_EXP_DEVCTL_CERE);
+		*value = mvebu_readl(port, PCIE_CAP_PCIEXP + PCI_EXP_DEVCTL);
 		break;
 
 	case PCI_EXP_LNKCAP:
@@ -468,6 +571,18 @@ mvebu_pci_bridge_emul_pcie_conf_read(struct pci_bridge_emul *bridge,
 		*value = mvebu_readl(port, PCIE_RC_RTSTA);
 		break;
 
+	case PCI_EXP_DEVCAP2:
+		*value = mvebu_readl(port, PCIE_CAP_PCIEXP + PCI_EXP_DEVCAP2);
+		break;
+
+	case PCI_EXP_DEVCTL2:
+		*value = mvebu_readl(port, PCIE_CAP_PCIEXP + PCI_EXP_DEVCTL2);
+		break;
+
+	case PCI_EXP_LNKCTL2:
+		*value = mvebu_readl(port, PCIE_CAP_PCIEXP + PCI_EXP_LNKCTL2);
+		break;
+
 	default:
 		return PCI_BRIDGE_EMUL_NOT_HANDLED;
 	}
@@ -484,39 +599,62 @@ mvebu_pci_bridge_emul_base_conf_write(struct pci_bridge_emul *bridge,
 
 	switch (reg) {
 	case PCI_COMMAND:
-	{
-		if (!mvebu_has_ioport(port))
-			conf->command &= ~PCI_COMMAND_IO;
-
-		if ((old ^ new) & PCI_COMMAND_IO)
-			mvebu_pcie_handle_iobase_change(port);
-		if ((old ^ new) & PCI_COMMAND_MEMORY)
-			mvebu_pcie_handle_membase_change(port);
+		if (!mvebu_has_ioport(port)) {
+			conf->command = cpu_to_le16(
+				le16_to_cpu(conf->command) & ~PCI_COMMAND_IO);
+			new &= ~PCI_COMMAND_IO;
+		}
 
+		mvebu_writel(port, new, PCIE_CMD_OFF);
 		break;
-	}
 
 	case PCI_IO_BASE:
-		/*
-		 * We keep bit 1 set, it is a read-only bit that
-		 * indicates we support 32 bits addressing for the
-		 * I/O
-		 */
-		conf->iobase |= PCI_IO_RANGE_TYPE_32;
-		conf->iolimit |= PCI_IO_RANGE_TYPE_32;
-		mvebu_pcie_handle_iobase_change(port);
+		if ((mask & 0xffff) && mvebu_pcie_handle_iobase_change(port)) {
+			/* On error disable IO range */
+			conf->iobase &= ~0xf0;
+			conf->iolimit &= ~0xf0;
+			conf->iobaseupper = cpu_to_le16(0x0000);
+			conf->iolimitupper = cpu_to_le16(0x0000);
+			if (mvebu_has_ioport(port))
+				conf->iobase |= 0xf0;
+		}
 		break;
 
 	case PCI_MEMORY_BASE:
-		mvebu_pcie_handle_membase_change(port);
+		if (mvebu_pcie_handle_membase_change(port)) {
+			/* On error disable mem range */
+			conf->membase = cpu_to_le16(le16_to_cpu(conf->membase) & ~0xfff0);
+			conf->memlimit = cpu_to_le16(le16_to_cpu(conf->memlimit) & ~0xfff0);
+			conf->membase = cpu_to_le16(le16_to_cpu(conf->membase) | 0xfff0);
+		}
 		break;
 
 	case PCI_IO_BASE_UPPER16:
-		mvebu_pcie_handle_iobase_change(port);
+		if (mvebu_pcie_handle_iobase_change(port)) {
+			/* On error disable IO range */
+			conf->iobase &= ~0xf0;
+			conf->iolimit &= ~0xf0;
+			conf->iobaseupper = cpu_to_le16(0x0000);
+			conf->iolimitupper = cpu_to_le16(0x0000);
+			if (mvebu_has_ioport(port))
+				conf->iobase |= 0xf0;
+		}
 		break;
 
 	case PCI_PRIMARY_BUS:
-		mvebu_pcie_set_local_bus_nr(port, conf->secondary_bus);
+		if (mask & 0xff00)
+			mvebu_pcie_set_local_bus_nr(port, conf->secondary_bus);
+		break;
+
+	case PCI_INTERRUPT_LINE:
+		if (mask & (PCI_BRIDGE_CTL_BUS_RESET << 16)) {
+			u32 ctrl = mvebu_readl(port, PCIE_CTRL_OFF);
+			if (new & (PCI_BRIDGE_CTL_BUS_RESET << 16))
+				ctrl |= PCIE_CTRL_MASTER_HOT_RESET;
+			else
+				ctrl &= ~PCIE_CTRL_MASTER_HOT_RESET;
+			mvebu_writel(port, ctrl, PCIE_CTRL_OFF);
+		}
 		break;
 
 	default:
@@ -532,13 +670,6 @@ mvebu_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge,
 
 	switch (reg) {
 	case PCI_EXP_DEVCTL:
-		/*
-		 * Armada370 data says these bits must always
-		 * be zero when in root complex mode.
-		 */
-		new &= ~(PCI_EXP_DEVCTL_URRE | PCI_EXP_DEVCTL_FERE |
-			 PCI_EXP_DEVCTL_NFERE | PCI_EXP_DEVCTL_CERE);
-
 		mvebu_writel(port, new, PCIE_CAP_PCIEXP + PCI_EXP_DEVCTL);
 		break;
 
@@ -555,12 +686,31 @@ mvebu_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge,
 		break;
 
 	case PCI_EXP_RTSTA:
-		mvebu_writel(port, new, PCIE_RC_RTSTA);
+		/*
+		 * PME Status bit in Root Status Register (PCIE_RC_RTSTA)
+		 * is read-only and can be cleared only by writing 0b to the
+		 * Interrupt Cause RW0C register (PCIE_INT_CAUSE_OFF). So
+		 * clear PME via Interrupt Cause.
+		 */
+		if (new & PCI_EXP_RTSTA_PME)
+			mvebu_writel(port, ~PCIE_INT_PM_PME, PCIE_INT_CAUSE_OFF);
+		break;
+
+	case PCI_EXP_DEVCTL2:
+		mvebu_writel(port, new, PCIE_CAP_PCIEXP + PCI_EXP_DEVCTL2);
+		break;
+
+	case PCI_EXP_LNKCTL2:
+		mvebu_writel(port, new, PCIE_CAP_PCIEXP + PCI_EXP_LNKCTL2);
+		break;
+
+	default:
 		break;
 	}
 }
 
 static struct pci_bridge_emul_ops mvebu_pci_bridge_emul_ops = {
+	.read_base = mvebu_pci_bridge_emul_base_conf_read,
 	.write_base = mvebu_pci_bridge_emul_base_conf_write,
 	.read_pcie = mvebu_pci_bridge_emul_pcie_conf_read,
 	.write_pcie = mvebu_pci_bridge_emul_pcie_conf_write,
@@ -570,9 +720,11 @@ static struct pci_bridge_emul_ops mvebu_pci_bridge_emul_ops = {
  * Initialize the configuration space of the PCI-to-PCI bridge
  * associated with the given PCIe interface.
  */
-static void mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port)
+static int mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port)
 {
 	struct pci_bridge_emul *bridge = &port->bridge;
+	u32 pcie_cap = mvebu_readl(port, PCIE_CAP_PCIEXP);
+	u8 pcie_cap_ver = ((pcie_cap >> 16) & PCI_EXP_FLAGS_VERS);
 
 	bridge->conf.vendor = PCI_VENDOR_ID_MARVELL;
 	bridge->conf.device = mvebu_readl(port, PCIE_DEV_ID_OFF) >> 16;
@@ -585,11 +737,17 @@ static void mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port)
 		bridge->conf.iolimit = PCI_IO_RANGE_TYPE_32;
 	}
 
+	/*
+	 * Older mvebu hardware provides PCIe Capability structure only in
+	 * version 1. New hardware provides it in version 2.
+	 */
+	bridge->pcie_conf.cap = cpu_to_le16(pcie_cap_ver);
+
 	bridge->has_pcie = true;
 	bridge->data = port;
 	bridge->ops = &mvebu_pci_bridge_emul_ops;
 
-	pci_bridge_emul_init(bridge, PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR);
+	return pci_bridge_emul_init(bridge, PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR);
 }
 
 static inline struct mvebu_pcie *sys_to_pcie(struct pci_sys_data *sys)
@@ -606,6 +764,9 @@ static struct mvebu_pcie_port *mvebu_pcie_find_port(struct mvebu_pcie *pcie,
 	for (i = 0; i < pcie->nports; i++) {
 		struct mvebu_pcie_port *port = &pcie->ports[i];
 
+		if (!port->base)
+			continue;
+
 		if (bus->number == 0 && port->devfn == devfn)
 			return port;
 		if (bus->number != 0 &&
@@ -653,20 +814,16 @@ static int mvebu_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
 	int ret;
 
 	port = mvebu_pcie_find_port(pcie, bus, devfn);
-	if (!port) {
-		*val = 0xffffffff;
+	if (!port)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	/* Access the emulated PCI-to-PCI bridge */
 	if (bus->number == 0)
 		return pci_bridge_emul_conf_read(&port->bridge, where,
 						 size, val);
 
-	if (!mvebu_pcie_link_up(port)) {
-		*val = 0xffffffff;
+	if (!mvebu_pcie_link_up(port))
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	/* Access the real PCIe interface */
 	ret = mvebu_pcie_hw_rd_conf(port, bus, devfn,
@@ -680,6 +837,15 @@ static struct pci_ops mvebu_pcie_ops = {
 	.write = mvebu_pcie_wr_conf,
 };
 
+static int mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	/* Interrupt support on mvebu emulated bridges is not implemented yet */
+	if (dev->bus->number == 0)
+		return 0; /* Proper return code 0 == NO_IRQ */
+
+	return of_irq_parse_and_map_pci(dev, slot, pin);
+}
+
 static resource_size_t mvebu_pcie_align_resource(struct pci_dev *dev,
 						 const struct resource *res,
 						 resource_size_t start,
@@ -781,6 +947,8 @@ static int mvebu_pcie_suspend(struct device *dev)
 	pcie = dev_get_drvdata(dev);
 	for (i = 0; i < pcie->nports; i++) {
 		struct mvebu_pcie_port *port = pcie->ports + i;
+		if (!port->base)
+			continue;
 		port->saved_pcie_stat = mvebu_readl(port, PCIE_STAT_OFF);
 	}
 
@@ -795,6 +963,8 @@ static int mvebu_pcie_resume(struct device *dev)
 	pcie = dev_get_drvdata(dev);
 	for (i = 0; i < pcie->nports; i++) {
 		struct mvebu_pcie_port *port = pcie->ports + i;
+		if (!port->base)
+			continue;
 		mvebu_writel(port, port->saved_pcie_stat, PCIE_STAT_OFF);
 		mvebu_pcie_setup_hw(port);
 	}
@@ -838,6 +1008,11 @@ static int mvebu_pcie_parse_port(struct mvebu_pcie *pcie,
 	port->devfn = of_pci_get_devfn(child);
 	if (port->devfn < 0)
 		goto skip;
+	if (PCI_FUNC(port->devfn) != 0) {
+		dev_err(dev, "%s: invalid function number, must be zero\n",
+			port->name);
+		goto skip;
+	}
 
 	ret = mvebu_get_tgt_attr(dev->of_node, port->devfn, IORESOURCE_MEM,
 				 &port->mem_target, &port->mem_attr);
@@ -992,6 +1167,10 @@ static int mvebu_pcie_parse_request_resources(struct mvebu_pcie *pcie)
 					 resource_size(&pcie->io) - 1);
 		pcie->realio.name = "PCI I/O";
 
+		ret = devm_pci_remap_iospace(dev, &pcie->realio, pcie->io.start);
+		if (ret)
+			return ret;
+
 		pci_add_resource(&bridge->windows, &pcie->realio);
 		ret = devm_request_resource(dev, &ioport_resource, &pcie->realio);
 		if (ret)
@@ -1001,54 +1180,6 @@ static int mvebu_pcie_parse_request_resources(struct mvebu_pcie *pcie)
 	return 0;
 }
 
-/*
- * This is a copy of pci_host_probe(), except that it does the I/O
- * remap as the last step, once we are sure we won't fail.
- *
- * It should be removed once the I/O remap error handling issue has
- * been sorted out.
- */
-static int mvebu_pci_host_probe(struct pci_host_bridge *bridge)
-{
-	struct mvebu_pcie *pcie;
-	struct pci_bus *bus, *child;
-	int ret;
-
-	ret = pci_scan_root_bus_bridge(bridge);
-	if (ret < 0) {
-		dev_err(bridge->dev.parent, "Scanning root bridge failed");
-		return ret;
-	}
-
-	pcie = pci_host_bridge_priv(bridge);
-	if (resource_size(&pcie->io) != 0) {
-		unsigned int i;
-
-		for (i = 0; i < resource_size(&pcie->realio); i += SZ_64K)
-			pci_ioremap_io(i, pcie->io.start + i);
-	}
-
-	bus = bridge->bus;
-
-	/*
-	 * We insert PCI resources into the iomem_resource and
-	 * ioport_resource trees in either pci_bus_claim_resources()
-	 * or pci_bus_assign_resources().
-	 */
-	if (pci_has_flag(PCI_PROBE_ONLY)) {
-		pci_bus_claim_resources(bus);
-	} else {
-		pci_bus_size_bridges(bus);
-		pci_bus_assign_resources(bus);
-
-		list_for_each_entry(child, &bus->children, node)
-			pcie_bus_configure_settings(child);
-	}
-
-	pci_bus_add_devices(bus);
-	return 0;
-}
-
 static int mvebu_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -1112,9 +1243,93 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
 			continue;
 		}
 
+		ret = mvebu_pci_bridge_emul_init(port);
+		if (ret < 0) {
+			dev_err(dev, "%s: cannot init emulated bridge\n",
+				port->name);
+			devm_iounmap(dev, port->base);
+			port->base = NULL;
+			mvebu_pcie_powerdown(port);
+			continue;
+		}
+
+		/*
+		 * PCIe topology exported by mvebu hw is quite complicated. In
+		 * reality has something like N fully independent host bridges
+		 * where each host bridge has one PCIe Root Port (which acts as
+		 * PCI Bridge device). Each host bridge has its own independent
+		 * internal registers, independent access to PCI config space,
+		 * independent interrupt lines, independent window and memory
+		 * access configuration. But additionally there is some kind of
+		 * peer-to-peer support between PCIe devices behind different
+		 * host bridges limited just to forwarding of memory and I/O
+		 * transactions (forwarding of error messages and config cycles
+		 * is not supported). So we could say there are N independent
+		 * PCIe Root Complexes.
+		 *
+		 * For this kind of setup DT should have been structured into
+		 * N independent PCIe controllers / host bridges. But instead
+		 * structure in past was defined to put PCIe Root Ports of all
+		 * host bridges into one bus zero, like in classic multi-port
+		 * Root Complex setup with just one host bridge.
+		 *
+		 * This means that pci-mvebu.c driver provides "virtual" bus 0
+		 * on which registers all PCIe Root Ports (PCI Bridge devices)
+		 * specified in DT by their BDF addresses and virtually routes
+		 * PCI config access of each PCI bridge device to specific PCIe
+		 * host bridge.
+		 *
+		 * Normally PCI Bridge should choose between Type 0 and Type 1
+		 * config requests based on primary and secondary bus numbers
+		 * configured on the bridge itself. But because mvebu PCI Bridge
+		 * does not have registers for primary and secondary bus numbers
+		 * in its config space, it determinates type of config requests
+		 * via its own custom way.
+		 *
+		 * There are two options how mvebu determinate type of config
+		 * request.
+		 *
+		 * 1. If Secondary Bus Number Enable bit is not set or is not
+		 * available (applies for pre-XP PCIe controllers) then Type 0
+		 * is used if target bus number equals Local Bus Number (bits
+		 * [15:8] in register 0x1a04) and target device number differs
+		 * from Local Device Number (bits [20:16] in register 0x1a04).
+		 * Type 1 is used if target bus number differs from Local Bus
+		 * Number. And when target bus number equals Local Bus Number
+		 * and target device equals Local Device Number then request is
+		 * routed to Local PCI Bridge (PCIe Root Port).
+		 *
+		 * 2. If Secondary Bus Number Enable bit is set (bit 7 in
+		 * register 0x1a2c) then mvebu hw determinate type of config
+		 * request like compliant PCI Bridge based on primary bus number
+		 * which is configured via Local Bus Number (bits [15:8] in
+		 * register 0x1a04) and secondary bus number which is configured
+		 * via Secondary Bus Number (bits [7:0] in register 0x1a2c).
+		 * Local PCI Bridge (PCIe Root Port) is available on primary bus
+		 * as device with Local Device Number (bits [20:16] in register
+		 * 0x1a04).
+		 *
+		 * Secondary Bus Number Enable bit is disabled by default and
+		 * option 2. is not available on pre-XP PCIe controllers. Hence
+		 * this driver always use option 1.
+		 *
+		 * Basically it means that primary and secondary buses shares
+		 * one virtual number configured via Local Bus Number bits and
+		 * Local Device Number bits determinates if accessing primary
+		 * or secondary bus. Set Local Device Number to 1 and redirect
+		 * all writes of PCI Bridge Secondary Bus Number register to
+		 * Local Bus Number (bits [15:8] in register 0x1a04).
+		 *
+		 * So when accessing devices on buses behind secondary bus
+		 * number it would work correctly. And also when accessing
+		 * device 0 at secondary bus number via config space would be
+		 * correctly routed to secondary bus. Due to issues described
+		 * in mvebu_pcie_setup_hw(), PCI Bridges at primary bus (zero)
+		 * are not accessed directly via PCI config space but rarher
+		 * indirectly via kernel emulated PCI bridge driver.
+		 */
 		mvebu_pcie_setup_hw(port);
-		mvebu_pcie_set_local_dev_nr(port, 1);
-		mvebu_pci_bridge_emul_init(port);
+		mvebu_pcie_set_local_dev_nr(port, 0);
 	}
 
 	pcie->nports = i;
@@ -1122,8 +1337,55 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
 	bridge->sysdata = pcie;
 	bridge->ops = &mvebu_pcie_ops;
 	bridge->align_resource = mvebu_pcie_align_resource;
+	bridge->map_irq = mvebu_pcie_map_irq;
+
+	return pci_host_probe(bridge);
+}
+
+static int mvebu_pcie_remove(struct platform_device *pdev)
+{
+	struct mvebu_pcie *pcie = platform_get_drvdata(pdev);
+	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
+	u32 cmd;
+	int i;
+
+	/* Remove PCI bus with all devices. */
+	pci_lock_rescan_remove();
+	pci_stop_root_bus(bridge->bus);
+	pci_remove_root_bus(bridge->bus);
+	pci_unlock_rescan_remove();
+
+	for (i = 0; i < pcie->nports; i++) {
+		struct mvebu_pcie_port *port = &pcie->ports[i];
+
+		if (!port->base)
+			continue;
+
+		/* Disable Root Bridge I/O space, memory space and bus mastering. */
+		cmd = mvebu_readl(port, PCIE_CMD_OFF);
+		cmd &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+		mvebu_writel(port, cmd, PCIE_CMD_OFF);
+
+		/* Mask all interrupt sources. */
+		mvebu_writel(port, 0, PCIE_MASK_OFF);
+
+		/* Free config space for emulated root bridge. */
+		pci_bridge_emul_cleanup(&port->bridge);
 
-	return mvebu_pci_host_probe(bridge);
+		/* Disable and clear BARs and windows. */
+		mvebu_pcie_disable_wins(port);
+
+		/* Delete PCIe IO and MEM windows. */
+		if (port->iowin.size)
+			mvebu_pcie_del_windows(port, port->iowin.base, port->iowin.size);
+		if (port->memwin.size)
+			mvebu_pcie_del_windows(port, port->memwin.base, port->memwin.size);
+
+		/* Power down card and disable clocks. Must be the last step. */
+		mvebu_pcie_powerdown(port);
+	}
+
+	return 0;
 }
 
 static const struct of_device_id mvebu_pcie_of_match_table[] = {
@@ -1142,10 +1404,14 @@ static struct platform_driver mvebu_pcie_driver = {
 	.driver = {
 		.name = "mvebu-pcie",
 		.of_match_table = mvebu_pcie_of_match_table,
-		/* driver unloading/unbinding currently not supported */
-		.suppress_bind_attrs = true,
 		.pm = &mvebu_pcie_pm_ops,
 	},
 	.probe = mvebu_pcie_probe,
+	.remove = mvebu_pcie_remove,
 };
-builtin_platform_driver(mvebu_pcie_driver);
+module_platform_driver(mvebu_pcie_driver);
+
+MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@bootlin.com>");
+MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
+MODULE_DESCRIPTION("Marvell EBU PCIe controller");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pci/controller/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
index afde4aa8f6dc..35804ea394fd 100644
--- a/drivers/pci/controller/pci-rcar-gen2.c
+++ b/drivers/pci/controller/pci-rcar-gen2.c
@@ -93,7 +93,7 @@
 
 #define RCAR_PCI_UNIT_REV_REG		(RCAR_AHBPCI_PCICOM_OFFSET + 0x48)
 
-struct rcar_pci_priv {
+struct rcar_pci {
 	struct device *dev;
 	void __iomem *reg;
 	struct resource mem_res;
@@ -105,7 +105,7 @@ struct rcar_pci_priv {
 static void __iomem *rcar_pci_cfg_base(struct pci_bus *bus, unsigned int devfn,
 				       int where)
 {
-	struct rcar_pci_priv *priv = bus->sysdata;
+	struct rcar_pci *priv = bus->sysdata;
 	int slot, val;
 
 	if (!pci_is_root_bus(bus) || PCI_FUNC(devfn))
@@ -132,7 +132,7 @@ static void __iomem *rcar_pci_cfg_base(struct pci_bus *bus, unsigned int devfn,
 
 static irqreturn_t rcar_pci_err_irq(int irq, void *pw)
 {
-	struct rcar_pci_priv *priv = pw;
+	struct rcar_pci *priv = pw;
 	struct device *dev = priv->dev;
 	u32 status = ioread32(priv->reg + RCAR_PCI_INT_STATUS_REG);
 
@@ -148,7 +148,7 @@ static irqreturn_t rcar_pci_err_irq(int irq, void *pw)
 	return IRQ_NONE;
 }
 
-static void rcar_pci_setup_errirq(struct rcar_pci_priv *priv)
+static void rcar_pci_setup_errirq(struct rcar_pci *priv)
 {
 	struct device *dev = priv->dev;
 	int ret;
@@ -166,11 +166,11 @@ static void rcar_pci_setup_errirq(struct rcar_pci_priv *priv)
 	iowrite32(val, priv->reg + RCAR_PCI_INT_ENABLE_REG);
 }
 #else
-static inline void rcar_pci_setup_errirq(struct rcar_pci_priv *priv) { }
+static inline void rcar_pci_setup_errirq(struct rcar_pci *priv) { }
 #endif
 
 /* PCI host controller setup */
-static void rcar_pci_setup(struct rcar_pci_priv *priv)
+static void rcar_pci_setup(struct rcar_pci *priv)
 {
 	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(priv);
 	struct device *dev = priv->dev;
@@ -279,7 +279,7 @@ static int rcar_pci_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct resource *cfg_res, *mem_res;
-	struct rcar_pci_priv *priv;
+	struct rcar_pci *priv;
 	struct pci_host_bridge *bridge;
 	void __iomem *reg;
 
diff --git a/drivers/pci/controller/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
index e9d5ca245f5e..b5bd10a62adb 100644
--- a/drivers/pci/controller/pci-thunder-ecam.c
+++ b/drivers/pci/controller/pci-thunder-ecam.c
@@ -41,10 +41,9 @@ static int handle_ea_bar(u32 e0, int bar, struct pci_bus *bus,
 	}
 	if (where_a == 0x4) {
 		addr = bus->ops->map_bus(bus, devfn, bar); /* BAR 0 */
-		if (!addr) {
-			*val = ~0;
+		if (!addr)
 			return PCIBIOS_DEVICE_NOT_FOUND;
-		}
+
 		v = readl(addr);
 		v &= ~0xf;
 		v |= 2; /* EA entry-1. Base-L */
@@ -56,10 +55,9 @@ static int handle_ea_bar(u32 e0, int bar, struct pci_bus *bus,
 		u32 barl_rb;
 
 		addr = bus->ops->map_bus(bus, devfn, bar); /* BAR 0 */
-		if (!addr) {
-			*val = ~0;
+		if (!addr)
 			return PCIBIOS_DEVICE_NOT_FOUND;
-		}
+
 		barl_orig = readl(addr + 0);
 		writel(0xffffffff, addr + 0);
 		barl_rb = readl(addr + 0);
@@ -72,10 +70,9 @@ static int handle_ea_bar(u32 e0, int bar, struct pci_bus *bus,
 	}
 	if (where_a == 0xc) {
 		addr = bus->ops->map_bus(bus, devfn, bar + 4); /* BAR 1 */
-		if (!addr) {
-			*val = ~0;
+		if (!addr)
 			return PCIBIOS_DEVICE_NOT_FOUND;
-		}
+
 		v = readl(addr); /* EA entry-3. Base-H */
 		set_val(v, where, size, val);
 		return PCIBIOS_SUCCESSFUL;
@@ -104,10 +101,8 @@ static int thunder_ecam_p2_config_read(struct pci_bus *bus, unsigned int devfn,
 	}
 
 	addr = bus->ops->map_bus(bus, devfn, where_a);
-	if (!addr) {
-		*val = ~0;
+	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	v = readl(addr);
 
@@ -135,10 +130,8 @@ static int thunder_ecam_config_read(struct pci_bus *bus, unsigned int devfn,
 	int where_a = where & ~3;
 
 	addr = bus->ops->map_bus(bus, devfn, 0xc);
-	if (!addr) {
-		*val = ~0;
+	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	v = readl(addr);
 
@@ -146,10 +139,8 @@ static int thunder_ecam_config_read(struct pci_bus *bus, unsigned int devfn,
 	cfg_type = (v >> 16) & 0x7f;
 
 	addr = bus->ops->map_bus(bus, devfn, 8);
-	if (!addr) {
-		*val = ~0;
+	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	class_rev = readl(addr);
 	if (class_rev == 0xffffffff)
@@ -176,10 +167,8 @@ static int thunder_ecam_config_read(struct pci_bus *bus, unsigned int devfn,
 	}
 
 	addr = bus->ops->map_bus(bus, devfn, 0);
-	if (!addr) {
-		*val = ~0;
+	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	vendor_device = readl(addr);
 	if (vendor_device == 0xffffffff)
@@ -196,10 +185,9 @@ static int thunder_ecam_config_read(struct pci_bus *bus, unsigned int devfn,
 		bool is_tns = (vendor_device == 0xa01f177d);
 
 		addr = bus->ops->map_bus(bus, devfn, 0x70);
-		if (!addr) {
-			*val = ~0;
+		if (!addr)
 			return PCIBIOS_DEVICE_NOT_FOUND;
-		}
+
 		/* E_CAP */
 		v = readl(addr);
 		has_msix = (v & 0xff00) != 0;
@@ -211,10 +199,9 @@ static int thunder_ecam_config_read(struct pci_bus *bus, unsigned int devfn,
 		}
 		if (where_a == 0xb0) {
 			addr = bus->ops->map_bus(bus, devfn, where_a);
-			if (!addr) {
-				*val = ~0;
+			if (!addr)
 				return PCIBIOS_DEVICE_NOT_FOUND;
-			}
+
 			v = readl(addr);
 			if (v & 0xff00)
 				pr_err("Bad MSIX cap header: %08x\n", v);
@@ -268,10 +255,9 @@ static int thunder_ecam_config_read(struct pci_bus *bus, unsigned int devfn,
 
 		if (where_a == 0x70) {
 			addr = bus->ops->map_bus(bus, devfn, where_a);
-			if (!addr) {
-				*val = ~0;
+			if (!addr)
 				return PCIBIOS_DEVICE_NOT_FOUND;
-			}
+
 			v = readl(addr);
 			if (v & 0xff00)
 				pr_err("Bad PCIe cap header: %08x\n", v);
diff --git a/drivers/pci/controller/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
index 0660b9da204f..06a9855cb431 100644
--- a/drivers/pci/controller/pci-thunder-pem.c
+++ b/drivers/pci/controller/pci-thunder-pem.c
@@ -41,10 +41,8 @@ static int thunder_pem_bridge_read(struct pci_bus *bus, unsigned int devfn,
 	struct pci_config_window *cfg = bus->sysdata;
 	struct thunder_pem_pci *pem_pci = (struct thunder_pem_pci *)cfg->priv;
 
-	if (devfn != 0 || where >= 2048) {
-		*val = ~0;
+	if (devfn != 0 || where >= 2048)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	/*
 	 * 32-bit accesses only.  Write the address to the low order
diff --git a/drivers/pci/controller/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c
index c50ff279903c..bfa259781b69 100644
--- a/drivers/pci/controller/pci-xgene-msi.c
+++ b/drivers/pci/controller/pci-xgene-msi.c
@@ -269,9 +269,7 @@ static void xgene_free_domains(struct xgene_msi *msi)
 
 static int xgene_msi_init_allocator(struct xgene_msi *xgene_msi)
 {
-	int size = BITS_TO_LONGS(NR_MSI_VEC) * sizeof(long);
-
-	xgene_msi->bitmap = kzalloc(size, GFP_KERNEL);
+	xgene_msi->bitmap = bitmap_zalloc(NR_MSI_VEC, GFP_KERNEL);
 	if (!xgene_msi->bitmap)
 		return -ENOMEM;
 
@@ -360,7 +358,7 @@ static int xgene_msi_remove(struct platform_device *pdev)
 
 	kfree(msi->msi_groups);
 
-	kfree(msi->bitmap);
+	bitmap_free(msi->bitmap);
 	msi->bitmap = NULL;
 
 	xgene_free_domains(msi);
diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
index 56d0d50338c8..0d5acbfc7143 100644
--- a/drivers/pci/controller/pci-xgene.c
+++ b/drivers/pci/controller/pci-xgene.c
@@ -60,7 +60,7 @@
 #define XGENE_PCIE_IP_VER_2		2
 
 #if defined(CONFIG_PCI_XGENE) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
-struct xgene_pcie_port {
+struct xgene_pcie {
 	struct device_node	*node;
 	struct device		*dev;
 	struct clk		*clk;
@@ -71,12 +71,12 @@ struct xgene_pcie_port {
 	u32			version;
 };
 
-static u32 xgene_pcie_readl(struct xgene_pcie_port *port, u32 reg)
+static u32 xgene_pcie_readl(struct xgene_pcie *port, u32 reg)
 {
 	return readl(port->csr_base + reg);
 }
 
-static void xgene_pcie_writel(struct xgene_pcie_port *port, u32 reg, u32 val)
+static void xgene_pcie_writel(struct xgene_pcie *port, u32 reg, u32 val)
 {
 	writel(val, port->csr_base + reg);
 }
@@ -86,15 +86,15 @@ static inline u32 pcie_bar_low_val(u32 addr, u32 flags)
 	return (addr & PCI_BASE_ADDRESS_MEM_MASK) | flags;
 }
 
-static inline struct xgene_pcie_port *pcie_bus_to_port(struct pci_bus *bus)
+static inline struct xgene_pcie *pcie_bus_to_port(struct pci_bus *bus)
 {
 	struct pci_config_window *cfg;
 
 	if (acpi_disabled)
-		return (struct xgene_pcie_port *)(bus->sysdata);
+		return (struct xgene_pcie *)(bus->sysdata);
 
 	cfg = bus->sysdata;
-	return (struct xgene_pcie_port *)(cfg->priv);
+	return (struct xgene_pcie *)(cfg->priv);
 }
 
 /*
@@ -103,7 +103,7 @@ static inline struct xgene_pcie_port *pcie_bus_to_port(struct pci_bus *bus)
  */
 static void __iomem *xgene_pcie_get_cfg_base(struct pci_bus *bus)
 {
-	struct xgene_pcie_port *port = pcie_bus_to_port(bus);
+	struct xgene_pcie *port = pcie_bus_to_port(bus);
 
 	if (bus->number >= (bus->primary + 1))
 		return port->cfg_base + AXI_EP_CFG_ACCESS;
@@ -117,7 +117,7 @@ static void __iomem *xgene_pcie_get_cfg_base(struct pci_bus *bus)
  */
 static void xgene_pcie_set_rtdid_reg(struct pci_bus *bus, uint devfn)
 {
-	struct xgene_pcie_port *port = pcie_bus_to_port(bus);
+	struct xgene_pcie *port = pcie_bus_to_port(bus);
 	unsigned int b, d, f;
 	u32 rtdid_val = 0;
 
@@ -164,18 +164,18 @@ static void __iomem *xgene_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
 static int xgene_pcie_config_read32(struct pci_bus *bus, unsigned int devfn,
 				    int where, int size, u32 *val)
 {
-	struct xgene_pcie_port *port = pcie_bus_to_port(bus);
+	struct xgene_pcie *port = pcie_bus_to_port(bus);
 
 	if (pci_generic_config_read32(bus, devfn, where & ~0x3, 4, val) !=
 	    PCIBIOS_SUCCESSFUL)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	/*
-	 * The v1 controller has a bug in its Configuration Request
-	 * Retry Status (CRS) logic: when CRS Software Visibility is
-	 * enabled and we read the Vendor and Device ID of a non-existent
-	 * device, the controller fabricates return data of 0xFFFF0001
-	 * ("device exists but is not ready") instead of 0xFFFFFFFF
+	 * The v1 controller has a bug in its Configuration Request Retry
+	 * Status (CRS) logic: when CRS Software Visibility is enabled and
+	 * we read the Vendor and Device ID of a non-existent device, the
+	 * controller fabricates return data of 0xFFFF0001 ("device exists
+	 * but is not ready") instead of 0xFFFFFFFF (PCI_ERROR_RESPONSE)
 	 * ("device does not exist").  This causes the PCI core to retry
 	 * the read until it times out.  Avoid this by not claiming to
 	 * support CRS SV.
@@ -227,7 +227,7 @@ static int xgene_pcie_ecam_init(struct pci_config_window *cfg, u32 ipversion)
 {
 	struct device *dev = cfg->parent;
 	struct acpi_device *adev = to_acpi_device(dev);
-	struct xgene_pcie_port *port;
+	struct xgene_pcie *port;
 	struct resource csr;
 	int ret;
 
@@ -281,7 +281,7 @@ const struct pci_ecam_ops xgene_v2_pcie_ecam_ops = {
 #endif
 
 #if defined(CONFIG_PCI_XGENE)
-static u64 xgene_pcie_set_ib_mask(struct xgene_pcie_port *port, u32 addr,
+static u64 xgene_pcie_set_ib_mask(struct xgene_pcie *port, u32 addr,
 				  u32 flags, u64 size)
 {
 	u64 mask = (~(size - 1) & PCI_BASE_ADDRESS_MEM_MASK) | flags;
@@ -307,7 +307,7 @@ static u64 xgene_pcie_set_ib_mask(struct xgene_pcie_port *port, u32 addr,
 	return mask;
 }
 
-static void xgene_pcie_linkup(struct xgene_pcie_port *port,
+static void xgene_pcie_linkup(struct xgene_pcie *port,
 			      u32 *lanes, u32 *speed)
 {
 	u32 val32;
@@ -322,7 +322,7 @@ static void xgene_pcie_linkup(struct xgene_pcie_port *port,
 	}
 }
 
-static int xgene_pcie_init_port(struct xgene_pcie_port *port)
+static int xgene_pcie_init_port(struct xgene_pcie *port)
 {
 	struct device *dev = port->dev;
 	int rc;
@@ -342,7 +342,7 @@ static int xgene_pcie_init_port(struct xgene_pcie_port *port)
 	return 0;
 }
 
-static int xgene_pcie_map_reg(struct xgene_pcie_port *port,
+static int xgene_pcie_map_reg(struct xgene_pcie *port,
 			      struct platform_device *pdev)
 {
 	struct device *dev = port->dev;
@@ -362,7 +362,7 @@ static int xgene_pcie_map_reg(struct xgene_pcie_port *port,
 	return 0;
 }
 
-static void xgene_pcie_setup_ob_reg(struct xgene_pcie_port *port,
+static void xgene_pcie_setup_ob_reg(struct xgene_pcie *port,
 				    struct resource *res, u32 offset,
 				    u64 cpu_addr, u64 pci_addr)
 {
@@ -394,7 +394,7 @@ static void xgene_pcie_setup_ob_reg(struct xgene_pcie_port *port,
 	xgene_pcie_writel(port, offset + 0x14, upper_32_bits(pci_addr));
 }
 
-static void xgene_pcie_setup_cfg_reg(struct xgene_pcie_port *port)
+static void xgene_pcie_setup_cfg_reg(struct xgene_pcie *port)
 {
 	u64 addr = port->cfg_addr;
 
@@ -403,7 +403,7 @@ static void xgene_pcie_setup_cfg_reg(struct xgene_pcie_port *port)
 	xgene_pcie_writel(port, CFGCTL, EN_REG);
 }
 
-static int xgene_pcie_map_ranges(struct xgene_pcie_port *port)
+static int xgene_pcie_map_ranges(struct xgene_pcie *port)
 {
 	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(port);
 	struct resource_entry *window;
@@ -444,7 +444,7 @@ static int xgene_pcie_map_ranges(struct xgene_pcie_port *port)
 	return 0;
 }
 
-static void xgene_pcie_setup_pims(struct xgene_pcie_port *port, u32 pim_reg,
+static void xgene_pcie_setup_pims(struct xgene_pcie *port, u32 pim_reg,
 				  u64 pim, u64 size)
 {
 	xgene_pcie_writel(port, pim_reg, lower_32_bits(pim));
@@ -465,7 +465,7 @@ static int xgene_pcie_select_ib_reg(u8 *ib_reg_mask, u64 size)
 		return 1;
 	}
 
-	if ((size > SZ_1K) && (size < SZ_1T) && !(*ib_reg_mask & (1 << 0))) {
+	if ((size > SZ_1K) && (size < SZ_4G) && !(*ib_reg_mask & (1 << 0))) {
 		*ib_reg_mask |= (1 << 0);
 		return 0;
 	}
@@ -478,7 +478,7 @@ static int xgene_pcie_select_ib_reg(u8 *ib_reg_mask, u64 size)
 	return -EINVAL;
 }
 
-static void xgene_pcie_setup_ib_reg(struct xgene_pcie_port *port,
+static void xgene_pcie_setup_ib_reg(struct xgene_pcie *port,
 				    struct resource_entry *entry,
 				    u8 *ib_reg_mask)
 {
@@ -529,7 +529,7 @@ static void xgene_pcie_setup_ib_reg(struct xgene_pcie_port *port,
 	xgene_pcie_setup_pims(port, pim_reg, pci_addr, ~(size - 1));
 }
 
-static int xgene_pcie_parse_map_dma_ranges(struct xgene_pcie_port *port)
+static int xgene_pcie_parse_map_dma_ranges(struct xgene_pcie *port)
 {
 	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(port);
 	struct resource_entry *entry;
@@ -542,7 +542,7 @@ static int xgene_pcie_parse_map_dma_ranges(struct xgene_pcie_port *port)
 }
 
 /* clear BAR configuration which was done by firmware */
-static void xgene_pcie_clear_config(struct xgene_pcie_port *port)
+static void xgene_pcie_clear_config(struct xgene_pcie *port)
 {
 	int i;
 
@@ -550,7 +550,7 @@ static void xgene_pcie_clear_config(struct xgene_pcie_port *port)
 		xgene_pcie_writel(port, i, 0);
 }
 
-static int xgene_pcie_setup(struct xgene_pcie_port *port)
+static int xgene_pcie_setup(struct xgene_pcie *port)
 {
 	struct device *dev = port->dev;
 	u32 val, lanes = 0, speed = 0;
@@ -588,7 +588,7 @@ static int xgene_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *dn = dev->of_node;
-	struct xgene_pcie_port *port;
+	struct xgene_pcie *port;
 	struct pci_host_bridge *bridge;
 	int ret;
 
diff --git a/drivers/pci/controller/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
index 2513e9363236..18b2361d6462 100644
--- a/drivers/pci/controller/pcie-altera.c
+++ b/drivers/pci/controller/pcie-altera.c
@@ -510,10 +510,8 @@ static int altera_pcie_cfg_read(struct pci_bus *bus, unsigned int devfn,
 	if (altera_pcie_hide_rc_bar(bus, devfn, where))
 		return PCIBIOS_BAD_REGISTER_NUMBER;
 
-	if (!altera_pcie_valid_device(pcie, bus, PCI_SLOT(devfn))) {
-		*value = 0xffffffff;
+	if (!altera_pcie_valid_device(pcie, bus, PCI_SLOT(devfn)))
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	return _altera_pcie_cfg_read(pcie, bus->number, devfn, where, size,
 				     value);
@@ -767,7 +765,7 @@ static int altera_pcie_probe(struct platform_device *pdev)
 	struct altera_pcie *pcie;
 	struct pci_host_bridge *bridge;
 	int ret;
-	const struct of_device_id *match;
+	const struct altera_pcie_data *data;
 
 	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
 	if (!bridge)
@@ -777,11 +775,11 @@ static int altera_pcie_probe(struct platform_device *pdev)
 	pcie->pdev = pdev;
 	platform_set_drvdata(pdev, pcie);
 
-	match = of_match_device(altera_pcie_of_match, &pdev->dev);
-	if (!match)
+	data = of_device_get_match_data(&pdev->dev);
+	if (!data)
 		return -ENODEV;
 
-	pcie->pcie_data = match->data;
+	pcie->pcie_data = data;
 
 	ret = altera_pcie_parse_dt(pcie);
 	if (ret) {
diff --git a/drivers/pci/controller/pcie-apple.c b/drivers/pci/controller/pcie-apple.c
index b090924b41fe..854d95163112 100644
--- a/drivers/pci/controller/pcie-apple.c
+++ b/drivers/pci/controller/pcie-apple.c
@@ -42,8 +42,9 @@
 #define   CORE_FABRIC_STAT_MASK		0x001F001F
 #define CORE_LANE_CFG(port)		(0x84000 + 0x4000 * (port))
 #define   CORE_LANE_CFG_REFCLK0REQ	BIT(0)
-#define   CORE_LANE_CFG_REFCLK1		BIT(1)
+#define   CORE_LANE_CFG_REFCLK1REQ	BIT(1)
 #define   CORE_LANE_CFG_REFCLK0ACK	BIT(2)
+#define   CORE_LANE_CFG_REFCLK1ACK	BIT(3)
 #define   CORE_LANE_CFG_REFCLKEN	(BIT(9) | BIT(10))
 #define CORE_LANE_CTL(port)		(0x84004 + 0x4000 * (port))
 #define   CORE_LANE_CTL_CFGACC		BIT(15)
@@ -482,9 +483,9 @@ static int apple_pcie_setup_refclk(struct apple_pcie *pcie,
 	if (res < 0)
 		return res;
 
-	rmw_set(CORE_LANE_CFG_REFCLK1, pcie->base + CORE_LANE_CFG(port->idx));
+	rmw_set(CORE_LANE_CFG_REFCLK1REQ, pcie->base + CORE_LANE_CFG(port->idx));
 	res = readl_relaxed_poll_timeout(pcie->base + CORE_LANE_CFG(port->idx),
-					 stat, stat & CORE_LANE_CFG_REFCLK1,
+					 stat, stat & CORE_LANE_CFG_REFCLK1ACK,
 					 100, 50000);
 
 	if (res < 0)
@@ -563,6 +564,9 @@ static int apple_pcie_setup_port(struct apple_pcie *pcie,
 		return ret;
 	}
 
+	rmw_clear(PORT_REFCLK_CGDIS, port->base + PORT_REFCLK);
+	rmw_clear(PORT_APPCLK_CGDIS, port->base + PORT_APPCLK);
+
 	ret = apple_pcie_port_setup_irq(port);
 	if (ret)
 		return ret;
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index a267cd5b3233..375c0c40bbf8 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -24,6 +24,7 @@
 #include <linux/pci.h>
 #include <linux/pci-ecam.h>
 #include <linux/printk.h>
+#include <linux/regulator/consumer.h>
 #include <linux/reset.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
@@ -145,6 +146,9 @@
 #define BRCM_INT_PCI_MSI_NR		32
 #define BRCM_INT_PCI_MSI_LEGACY_NR	8
 #define BRCM_INT_PCI_MSI_SHIFT		0
+#define BRCM_INT_PCI_MSI_MASK		GENMASK(BRCM_INT_PCI_MSI_NR - 1, 0)
+#define BRCM_INT_PCI_MSI_LEGACY_MASK	GENMASK(31, \
+						32 - BRCM_INT_PCI_MSI_LEGACY_NR)
 
 /* MSI target addresses */
 #define BRCM_MSI_TARGET_ADDR_LT_4GB	0x0fffffffcULL
@@ -192,6 +196,8 @@ static inline void brcm_pcie_bridge_sw_init_set_generic(struct brcm_pcie *pcie,
 static inline void brcm_pcie_perst_set_4908(struct brcm_pcie *pcie, u32 val);
 static inline void brcm_pcie_perst_set_7278(struct brcm_pcie *pcie, u32 val);
 static inline void brcm_pcie_perst_set_generic(struct brcm_pcie *pcie, u32 val);
+static int brcm_pcie_linkup(struct brcm_pcie *pcie);
+static int brcm_pcie_add_bus(struct pci_bus *bus);
 
 enum {
 	RGR1_SW_INIT_1,
@@ -280,6 +286,14 @@ static const struct pcie_cfg_data bcm2711_cfg = {
 	.bridge_sw_init_set = brcm_pcie_bridge_sw_init_set_generic,
 };
 
+struct subdev_regulators {
+	unsigned int num_supplies;
+	struct regulator_bulk_data supplies[];
+};
+
+static int pci_subdev_regulators_add_bus(struct pci_bus *bus);
+static void pci_subdev_regulators_remove_bus(struct pci_bus *bus);
+
 struct brcm_msi {
 	struct device		*dev;
 	void __iomem		*base;
@@ -289,8 +303,7 @@ struct brcm_msi {
 	struct mutex		lock; /* guards the alloc/free operations */
 	u64			target_addr;
 	int			irq;
-	/* used indicates which MSI interrupts have been alloc'd */
-	unsigned long		used;
+	DECLARE_BITMAP(used, BRCM_INT_PCI_MSI_NR);
 	bool			legacy;
 	/* Some chips have MSIs in bits [31..24] of a shared register. */
 	int			legacy_shift;
@@ -318,6 +331,9 @@ struct brcm_pcie {
 	u32			hw_rev;
 	void			(*perst_set)(struct brcm_pcie *pcie, u32 val);
 	void			(*bridge_sw_init_set)(struct brcm_pcie *pcie, u32 val);
+	bool			refusal_mode;
+	struct subdev_regulators *sr;
+	bool			ep_wakeup_capable;
 };
 
 static inline bool is_bmips(const struct brcm_pcie *pcie)
@@ -434,6 +450,99 @@ static int brcm_pcie_set_ssc(struct brcm_pcie *pcie)
 	return ssc && pll ? 0 : -EIO;
 }
 
+static void *alloc_subdev_regulators(struct device *dev)
+{
+	static const char * const supplies[] = {
+		"vpcie3v3",
+		"vpcie3v3aux",
+		"vpcie12v",
+	};
+	const size_t size = sizeof(struct subdev_regulators)
+		+ sizeof(struct regulator_bulk_data) * ARRAY_SIZE(supplies);
+	struct subdev_regulators *sr;
+	int i;
+
+	sr = devm_kzalloc(dev, size, GFP_KERNEL);
+	if (sr) {
+		sr->num_supplies = ARRAY_SIZE(supplies);
+		for (i = 0; i < ARRAY_SIZE(supplies); i++)
+			sr->supplies[i].supply = supplies[i];
+	}
+
+	return sr;
+}
+
+static int pci_subdev_regulators_add_bus(struct pci_bus *bus)
+{
+	struct device *dev = &bus->dev;
+	struct subdev_regulators *sr;
+	int ret;
+
+	if (!dev->of_node || !bus->parent || !pci_is_root_bus(bus->parent))
+		return 0;
+
+	if (dev->driver_data)
+		dev_err(dev, "dev.driver_data unexpectedly non-NULL\n");
+
+	sr = alloc_subdev_regulators(dev);
+	if (!sr)
+		return -ENOMEM;
+
+	dev->driver_data = sr;
+	ret = regulator_bulk_get(dev, sr->num_supplies, sr->supplies);
+	if (ret)
+		return ret;
+
+	ret = regulator_bulk_enable(sr->num_supplies, sr->supplies);
+	if (ret) {
+		dev_err(dev, "failed to enable regulators for downstream device\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int brcm_pcie_add_bus(struct pci_bus *bus)
+{
+	struct device *dev = &bus->dev;
+	struct brcm_pcie *pcie = (struct brcm_pcie *) bus->sysdata;
+	int ret;
+
+	if (!dev->of_node || !bus->parent || !pci_is_root_bus(bus->parent))
+		return 0;
+
+	ret = pci_subdev_regulators_add_bus(bus);
+	if (ret)
+		return ret;
+
+	/* Grab the regulators for suspend/resume */
+	pcie->sr = bus->dev.driver_data;
+
+	/*
+	 * If we have failed linkup there is no point to return an error as
+	 * currently it will cause a WARNING() from pci_alloc_child_bus().
+	 * We return 0 and turn on the "refusal_mode" so that any further
+	 * accesses to the pci_dev just get 0xffffffff
+	 */
+	if (brcm_pcie_linkup(pcie) != 0)
+		pcie->refusal_mode = true;
+
+	return 0;
+}
+
+static void pci_subdev_regulators_remove_bus(struct pci_bus *bus)
+{
+	struct device *dev = &bus->dev;
+	struct subdev_regulators *sr = dev->driver_data;
+
+	if (!sr || !bus->parent || !pci_is_root_bus(bus->parent))
+		return;
+
+	if (regulator_bulk_disable(sr->num_supplies, sr->supplies))
+		dev_err(dev, "failed to disable regulators for downstream device\n");
+	dev->driver_data = NULL;
+}
+
 /* Limits operation to a specific generation (1, 2, or 3) */
 static void brcm_pcie_set_gen(struct brcm_pcie *pcie, int gen)
 {
@@ -565,7 +674,7 @@ static int brcm_msi_alloc(struct brcm_msi *msi)
 	int hwirq;
 
 	mutex_lock(&msi->lock);
-	hwirq = bitmap_find_free_region(&msi->used, msi->nr, 0);
+	hwirq = bitmap_find_free_region(msi->used, msi->nr, 0);
 	mutex_unlock(&msi->lock);
 
 	return hwirq;
@@ -574,7 +683,7 @@ static int brcm_msi_alloc(struct brcm_msi *msi)
 static void brcm_msi_free(struct brcm_msi *msi, unsigned long hwirq)
 {
 	mutex_lock(&msi->lock);
-	bitmap_release_region(&msi->used, hwirq, 0);
+	bitmap_release_region(msi->used, hwirq, 0);
 	mutex_unlock(&msi->lock);
 }
 
@@ -650,7 +759,8 @@ static void brcm_msi_remove(struct brcm_pcie *pcie)
 
 static void brcm_msi_set_regs(struct brcm_msi *msi)
 {
-	u32 val = __GENMASK(31, msi->legacy_shift);
+	u32 val = msi->legacy ? BRCM_INT_PCI_MSI_LEGACY_MASK :
+				BRCM_INT_PCI_MSI_MASK;
 
 	writel(val, msi->intr_base + MSI_INT_MASK_CLR);
 	writel(val, msi->intr_base + MSI_INT_CLR);
@@ -692,6 +802,12 @@ static int brcm_pcie_enable_msi(struct brcm_pcie *pcie)
 	msi->irq = irq;
 	msi->legacy = pcie->hw_rev < BRCM_PCIE_HW_REV_33;
 
+	/*
+	 * Sanity check to make sure that the 'used' bitmap in struct brcm_msi
+	 * is large enough.
+	 */
+	BUILD_BUG_ON(BRCM_INT_PCI_MSI_LEGACY_NR > BRCM_INT_PCI_MSI_NR);
+
 	if (msi->legacy) {
 		msi->intr_base = msi->base + PCIE_INTR2_CPU_BASE;
 		msi->nr = BRCM_INT_PCI_MSI_LEGACY_NR;
@@ -742,6 +858,18 @@ static void __iomem *brcm_pcie_map_conf(struct pci_bus *bus, unsigned int devfn,
 	/* Accesses to the RC go right to the RC registers if slot==0 */
 	if (pci_is_root_bus(bus))
 		return PCI_SLOT(devfn) ? NULL : base + where;
+	if (pcie->refusal_mode) {
+		/*
+		 * At this point we do not have link.  There will be a CPU
+		 * abort -- a quirk with this controller --if Linux tries
+		 * to read any config-space registers besides those
+		 * targeting the host bridge.  To prevent this we hijack
+		 * the address to point to a safe access that will return
+		 * 0xffffffff.
+		 */
+		writel(0xffffffff, base + PCIE_MISC_RC_BAR2_CONFIG_HI);
+		return base + PCIE_MISC_RC_BAR2_CONFIG_HI + (where & 0x3);
+	}
 
 	/* For devices, write to the config space index register */
 	idx = PCIE_ECAM_OFFSET(bus->number, devfn, 0);
@@ -770,6 +898,8 @@ static struct pci_ops brcm_pcie_ops = {
 	.map_bus = brcm_pcie_map_conf,
 	.read = pci_generic_config_read,
 	.write = pci_generic_config_write,
+	.add_bus = brcm_pcie_add_bus,
+	.remove_bus = pci_subdev_regulators_remove_bus,
 };
 
 static struct pci_ops brcm_pcie_ops32 = {
@@ -917,16 +1047,9 @@ static inline int brcm_pcie_get_rc_bar2_size_and_offset(struct brcm_pcie *pcie,
 
 static int brcm_pcie_setup(struct brcm_pcie *pcie)
 {
-	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
 	u64 rc_bar2_offset, rc_bar2_size;
 	void __iomem *base = pcie->base;
-	struct device *dev = pcie->dev;
-	struct resource_entry *entry;
-	bool ssc_good = false;
-	struct resource *res;
-	int num_out_wins = 0;
-	u16 nlw, cls, lnksta;
-	int i, ret, memc;
+	int ret, memc;
 	u32 tmp, burst, aspm_support;
 
 	/* Reset the bridge */
@@ -1016,6 +1139,40 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
 	if (pcie->gen)
 		brcm_pcie_set_gen(pcie, pcie->gen);
 
+	/* Don't advertise L0s capability if 'aspm-no-l0s' */
+	aspm_support = PCIE_LINK_STATE_L1;
+	if (!of_property_read_bool(pcie->np, "aspm-no-l0s"))
+		aspm_support |= PCIE_LINK_STATE_L0S;
+	tmp = readl(base + PCIE_RC_CFG_PRIV1_LINK_CAPABILITY);
+	u32p_replace_bits(&tmp, aspm_support,
+		PCIE_RC_CFG_PRIV1_LINK_CAPABILITY_ASPM_SUPPORT_MASK);
+	writel(tmp, base + PCIE_RC_CFG_PRIV1_LINK_CAPABILITY);
+
+	/*
+	 * For config space accesses on the RC, show the right class for
+	 * a PCIe-PCIe bridge (the default setting is to be EP mode).
+	 */
+	tmp = readl(base + PCIE_RC_CFG_PRIV1_ID_VAL3);
+	u32p_replace_bits(&tmp, 0x060400,
+			  PCIE_RC_CFG_PRIV1_ID_VAL3_CLASS_CODE_MASK);
+	writel(tmp, base + PCIE_RC_CFG_PRIV1_ID_VAL3);
+
+	return 0;
+}
+
+static int brcm_pcie_linkup(struct brcm_pcie *pcie)
+{
+	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
+	struct device *dev = pcie->dev;
+	void __iomem *base = pcie->base;
+	struct resource_entry *entry;
+	struct resource *res;
+	int num_out_wins = 0;
+	u16 nlw, cls, lnksta;
+	bool ssc_good = false;
+	u32 tmp;
+	int ret, i;
+
 	/* Unassert the fundamental reset */
 	pcie->perst_set(pcie, 0);
 
@@ -1066,24 +1223,6 @@ static int brcm_pcie_setup(struct brcm_pcie *pcie)
 		num_out_wins++;
 	}
 
-	/* Don't advertise L0s capability if 'aspm-no-l0s' */
-	aspm_support = PCIE_LINK_STATE_L1;
-	if (!of_property_read_bool(pcie->np, "aspm-no-l0s"))
-		aspm_support |= PCIE_LINK_STATE_L0S;
-	tmp = readl(base + PCIE_RC_CFG_PRIV1_LINK_CAPABILITY);
-	u32p_replace_bits(&tmp, aspm_support,
-		PCIE_RC_CFG_PRIV1_LINK_CAPABILITY_ASPM_SUPPORT_MASK);
-	writel(tmp, base + PCIE_RC_CFG_PRIV1_LINK_CAPABILITY);
-
-	/*
-	 * For config space accesses on the RC, show the right class for
-	 * a PCIe-PCIe bridge (the default setting is to be EP mode).
-	 */
-	tmp = readl(base + PCIE_RC_CFG_PRIV1_ID_VAL3);
-	u32p_replace_bits(&tmp, 0x060400,
-			  PCIE_RC_CFG_PRIV1_ID_VAL3_CLASS_CODE_MASK);
-	writel(tmp, base + PCIE_RC_CFG_PRIV1_ID_VAL3);
-
 	if (pcie->ssc) {
 		ret = brcm_pcie_set_ssc(pcie);
 		if (ret == 0)
@@ -1212,17 +1351,60 @@ static void brcm_pcie_turn_off(struct brcm_pcie *pcie)
 	pcie->bridge_sw_init_set(pcie, 1);
 }
 
+static int pci_dev_may_wakeup(struct pci_dev *dev, void *data)
+{
+	bool *ret = data;
+
+	if (device_may_wakeup(&dev->dev)) {
+		*ret = true;
+		dev_info(&dev->dev, "disable cancelled for wake-up device\n");
+	}
+	return (int) *ret;
+}
+
 static int brcm_pcie_suspend(struct device *dev)
 {
 	struct brcm_pcie *pcie = dev_get_drvdata(dev);
+	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
 	int ret;
 
 	brcm_pcie_turn_off(pcie);
-	ret = brcm_phy_stop(pcie);
-	reset_control_rearm(pcie->rescal);
+	/*
+	 * If brcm_phy_stop() returns an error, just dev_err(). If we
+	 * return the error it will cause the suspend to fail and this is a
+	 * forgivable offense that will probably be erased on resume.
+	 */
+	if (brcm_phy_stop(pcie))
+		dev_err(dev, "Could not stop phy for suspend\n");
+
+	ret = reset_control_rearm(pcie->rescal);
+	if (ret) {
+		dev_err(dev, "Could not rearm rescal reset\n");
+		return ret;
+	}
+
+	if (pcie->sr) {
+		/*
+		 * Now turn off the regulators, but if at least one
+		 * downstream device is enabled as a wake-up source, do not
+		 * turn off regulators.
+		 */
+		pcie->ep_wakeup_capable = false;
+		pci_walk_bus(bridge->bus, pci_dev_may_wakeup,
+			     &pcie->ep_wakeup_capable);
+		if (!pcie->ep_wakeup_capable) {
+			ret = regulator_bulk_disable(pcie->sr->num_supplies,
+						     pcie->sr->supplies);
+			if (ret) {
+				dev_err(dev, "Could not turn off regulators\n");
+				reset_control_reset(pcie->rescal);
+				return ret;
+			}
+		}
+	}
 	clk_disable_unprepare(pcie->clk);
 
-	return ret;
+	return 0;
 }
 
 static int brcm_pcie_resume(struct device *dev)
@@ -1233,11 +1415,32 @@ static int brcm_pcie_resume(struct device *dev)
 	int ret;
 
 	base = pcie->base;
-	clk_prepare_enable(pcie->clk);
+	ret = clk_prepare_enable(pcie->clk);
+	if (ret)
+		return ret;
+
+	if (pcie->sr) {
+		if (pcie->ep_wakeup_capable) {
+			/*
+			 * We are resuming from a suspend.  In the suspend we
+			 * did not disable the power supplies, so there is
+			 * no need to enable them (and falsely increase their
+			 * usage count).
+			 */
+			pcie->ep_wakeup_capable = false;
+		} else {
+			ret = regulator_bulk_enable(pcie->sr->num_supplies,
+						    pcie->sr->supplies);
+			if (ret) {
+				dev_err(dev, "Could not turn on regulators\n");
+				goto err_disable_clk;
+			}
+		}
+	}
 
 	ret = reset_control_reset(pcie->rescal);
 	if (ret)
-		goto err_disable_clk;
+		goto err_regulator;
 
 	ret = brcm_phy_start(pcie);
 	if (ret)
@@ -1258,6 +1461,10 @@ static int brcm_pcie_resume(struct device *dev)
 	if (ret)
 		goto err_reset;
 
+	ret = brcm_pcie_linkup(pcie);
+	if (ret)
+		goto err_reset;
+
 	if (pcie->msi)
 		brcm_msi_set_regs(pcie->msi);
 
@@ -1265,6 +1472,9 @@ static int brcm_pcie_resume(struct device *dev)
 
 err_reset:
 	reset_control_rearm(pcie->rescal);
+err_regulator:
+	if (pcie->sr)
+		regulator_bulk_disable(pcie->sr->num_supplies, pcie->sr->supplies);
 err_disable_clk:
 	clk_disable_unprepare(pcie->clk);
 	return ret;
@@ -1274,8 +1484,10 @@ static void __brcm_pcie_remove(struct brcm_pcie *pcie)
 {
 	brcm_msi_remove(pcie);
 	brcm_pcie_turn_off(pcie);
-	brcm_phy_stop(pcie);
-	reset_control_rearm(pcie->rescal);
+	if (brcm_phy_stop(pcie))
+		dev_err(pcie->dev, "Could not stop phy\n");
+	if (reset_control_rearm(pcie->rescal))
+		dev_err(pcie->dev, "Could not rearm rescal reset\n");
 	clk_disable_unprepare(pcie->clk);
 }
 
@@ -1394,7 +1606,17 @@ static int brcm_pcie_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, pcie);
 
-	return pci_host_probe(bridge);
+	ret = pci_host_probe(bridge);
+	if (!ret && !brcm_pcie_link_up(pcie))
+		ret = -ENODEV;
+
+	if (ret) {
+		brcm_pcie_remove(pdev);
+		return ret;
+	}
+
+	return 0;
+
 fail:
 	__brcm_pcie_remove(pcie);
 	return ret;
@@ -1403,8 +1625,8 @@ fail:
 MODULE_DEVICE_TABLE(of, brcm_pcie_match);
 
 static const struct dev_pm_ops brcm_pcie_pm_ops = {
-	.suspend = brcm_pcie_suspend,
-	.resume = brcm_pcie_resume,
+	.suspend_noirq = brcm_pcie_suspend,
+	.resume_noirq = brcm_pcie_resume,
 };
 
 static struct platform_driver brcm_pcie_driver = {
diff --git a/drivers/pci/controller/pcie-iproc-bcma.c b/drivers/pci/controller/pcie-iproc-bcma.c
index f918c713afb0..54b6e6d5bc64 100644
--- a/drivers/pci/controller/pcie-iproc-bcma.c
+++ b/drivers/pci/controller/pcie-iproc-bcma.c
@@ -23,7 +23,7 @@ static void bcma_pcie2_fixup_class(struct pci_dev *dev)
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class);
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class);
 
-static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+static int iproc_bcma_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct iproc_pcie *pcie = dev->sysdata;
 	struct bcma_device *bdev = container_of(pcie->dev, struct bcma_device, dev);
@@ -31,7 +31,7 @@ static int iproc_pcie_bcma_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 	return bcma_core_irq(bdev, 5);
 }
 
-static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
+static int iproc_bcma_pcie_probe(struct bcma_device *bdev)
 {
 	struct device *dev = &bdev->dev;
 	struct iproc_pcie *pcie;
@@ -64,33 +64,33 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
 	if (ret)
 		return ret;
 
-	pcie->map_irq = iproc_pcie_bcma_map_irq;
+	pcie->map_irq = iproc_bcma_pcie_map_irq;
 
 	bcma_set_drvdata(bdev, pcie);
 
 	return iproc_pcie_setup(pcie, &bridge->windows);
 }
 
-static void iproc_pcie_bcma_remove(struct bcma_device *bdev)
+static void iproc_bcma_pcie_remove(struct bcma_device *bdev)
 {
 	struct iproc_pcie *pcie = bcma_get_drvdata(bdev);
 
 	iproc_pcie_remove(pcie);
 }
 
-static const struct bcma_device_id iproc_pcie_bcma_table[] = {
+static const struct bcma_device_id iproc_bcma_pcie_table[] = {
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_PCIEG2, BCMA_ANY_REV, BCMA_ANY_CLASS),
 	{},
 };
-MODULE_DEVICE_TABLE(bcma, iproc_pcie_bcma_table);
+MODULE_DEVICE_TABLE(bcma, iproc_bcma_pcie_table);
 
-static struct bcma_driver iproc_pcie_bcma_driver = {
+static struct bcma_driver iproc_bcma_pcie_driver = {
 	.name		= KBUILD_MODNAME,
-	.id_table	= iproc_pcie_bcma_table,
-	.probe		= iproc_pcie_bcma_probe,
-	.remove		= iproc_pcie_bcma_remove,
+	.id_table	= iproc_bcma_pcie_table,
+	.probe		= iproc_bcma_pcie_probe,
+	.remove		= iproc_bcma_pcie_remove,
 };
-module_bcma_driver(iproc_pcie_bcma_driver);
+module_bcma_driver(iproc_bcma_pcie_driver);
 
 MODULE_AUTHOR("Hauke Mehrtens");
 MODULE_DESCRIPTION("Broadcom iProc PCIe BCMA driver");
diff --git a/drivers/pci/controller/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c
index b93e7bda101b..538115246c79 100644
--- a/drivers/pci/controller/pcie-iproc-platform.c
+++ b/drivers/pci/controller/pcie-iproc-platform.c
@@ -37,7 +37,7 @@ static const struct of_device_id iproc_pcie_of_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table);
 
-static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
+static int iproc_pltfm_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct iproc_pcie *pcie;
@@ -115,30 +115,30 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int iproc_pcie_pltfm_remove(struct platform_device *pdev)
+static int iproc_pltfm_pcie_remove(struct platform_device *pdev)
 {
 	struct iproc_pcie *pcie = platform_get_drvdata(pdev);
 
 	return iproc_pcie_remove(pcie);
 }
 
-static void iproc_pcie_pltfm_shutdown(struct platform_device *pdev)
+static void iproc_pltfm_pcie_shutdown(struct platform_device *pdev)
 {
 	struct iproc_pcie *pcie = platform_get_drvdata(pdev);
 
 	iproc_pcie_shutdown(pcie);
 }
 
-static struct platform_driver iproc_pcie_pltfm_driver = {
+static struct platform_driver iproc_pltfm_pcie_driver = {
 	.driver = {
 		.name = "iproc-pcie",
 		.of_match_table = of_match_ptr(iproc_pcie_of_match_table),
 	},
-	.probe = iproc_pcie_pltfm_probe,
-	.remove = iproc_pcie_pltfm_remove,
-	.shutdown = iproc_pcie_pltfm_shutdown,
+	.probe = iproc_pltfm_pcie_probe,
+	.remove = iproc_pltfm_pcie_remove,
+	.shutdown = iproc_pltfm_pcie_shutdown,
 };
-module_platform_driver(iproc_pcie_pltfm_driver);
+module_platform_driver(iproc_pltfm_pcie_driver);
 
 MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>");
 MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver");
diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c
index 36b9d2c46cfa..b3e75bc61ff1 100644
--- a/drivers/pci/controller/pcie-iproc.c
+++ b/drivers/pci/controller/pcie-iproc.c
@@ -659,10 +659,8 @@ static int iproc_pci_raw_config_read32(struct iproc_pcie *pcie,
 	void __iomem *addr;
 
 	addr = iproc_pcie_map_cfg_bus(pcie, 0, devfn, where & ~0x3);
-	if (!addr) {
-		*val = ~0;
+	if (!addr)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	*val = readl(addr);
 
diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c
index 17c59b0d6978..7705d61fba4c 100644
--- a/drivers/pci/controller/pcie-mediatek-gen3.c
+++ b/drivers/pci/controller/pcie-mediatek-gen3.c
@@ -79,6 +79,9 @@
 #define PCIE_ICMD_PM_REG		0x198
 #define PCIE_TURN_OFF_LINK		BIT(4)
 
+#define PCIE_MISC_CTRL_REG		0x348
+#define PCIE_DISABLE_DVFSRC_VLT_REQ	BIT(1)
+
 #define PCIE_TRANS_TABLE_BASE_REG	0x800
 #define PCIE_ATR_SRC_ADDR_MSB_OFFSET	0x4
 #define PCIE_ATR_TRSL_ADDR_LSB_OFFSET	0x8
@@ -110,7 +113,7 @@ struct mtk_msi_set {
 };
 
 /**
- * struct mtk_pcie_port - PCIe port information
+ * struct mtk_gen3_pcie - PCIe port information
  * @dev: pointer to PCIe device
  * @base: IO mapped register base
  * @reg_base: physical register base
@@ -129,7 +132,7 @@ struct mtk_msi_set {
  * @lock: lock protecting IRQ bit map
  * @msi_irq_in_use: bit map for assigned MSI IRQ
  */
-struct mtk_pcie_port {
+struct mtk_gen3_pcie {
 	struct device *dev;
 	void __iomem *base;
 	phys_addr_t reg_base;
@@ -162,7 +165,7 @@ struct mtk_pcie_port {
 static void mtk_pcie_config_tlp_header(struct pci_bus *bus, unsigned int devfn,
 					int where, int size)
 {
-	struct mtk_pcie_port *port = bus->sysdata;
+	struct mtk_gen3_pcie *pcie = bus->sysdata;
 	int bytes;
 	u32 val;
 
@@ -171,15 +174,15 @@ static void mtk_pcie_config_tlp_header(struct pci_bus *bus, unsigned int devfn,
 	val = PCIE_CFG_FORCE_BYTE_EN | PCIE_CFG_BYTE_EN(bytes) |
 	      PCIE_CFG_HEADER(bus->number, devfn);
 
-	writel_relaxed(val, port->base + PCIE_CFGNUM_REG);
+	writel_relaxed(val, pcie->base + PCIE_CFGNUM_REG);
 }
 
 static void __iomem *mtk_pcie_map_bus(struct pci_bus *bus, unsigned int devfn,
 				      int where)
 {
-	struct mtk_pcie_port *port = bus->sysdata;
+	struct mtk_gen3_pcie *pcie = bus->sysdata;
 
-	return port->base + PCIE_CFG_OFFSET_ADDR + where;
+	return pcie->base + PCIE_CFG_OFFSET_ADDR + where;
 }
 
 static int mtk_pcie_config_read(struct pci_bus *bus, unsigned int devfn,
@@ -207,7 +210,7 @@ static struct pci_ops mtk_pcie_ops = {
 	.write = mtk_pcie_config_write,
 };
 
-static int mtk_pcie_set_trans_table(struct mtk_pcie_port *port,
+static int mtk_pcie_set_trans_table(struct mtk_gen3_pcie *pcie,
 				    resource_size_t cpu_addr,
 				    resource_size_t pci_addr,
 				    resource_size_t size,
@@ -217,12 +220,12 @@ static int mtk_pcie_set_trans_table(struct mtk_pcie_port *port,
 	u32 val;
 
 	if (num >= PCIE_MAX_TRANS_TABLES) {
-		dev_err(port->dev, "not enough translate table for addr: %#llx, limited to [%d]\n",
+		dev_err(pcie->dev, "not enough translate table for addr: %#llx, limited to [%d]\n",
 			(unsigned long long)cpu_addr, PCIE_MAX_TRANS_TABLES);
 		return -ENODEV;
 	}
 
-	table = port->base + PCIE_TRANS_TABLE_BASE_REG +
+	table = pcie->base + PCIE_TRANS_TABLE_BASE_REG +
 		num * PCIE_ATR_TLB_SET_OFFSET;
 
 	writel_relaxed(lower_32_bits(cpu_addr) | PCIE_ATR_SIZE(fls(size) - 1),
@@ -244,66 +247,71 @@ static int mtk_pcie_set_trans_table(struct mtk_pcie_port *port,
 	return 0;
 }
 
-static void mtk_pcie_enable_msi(struct mtk_pcie_port *port)
+static void mtk_pcie_enable_msi(struct mtk_gen3_pcie *pcie)
 {
 	int i;
 	u32 val;
 
 	for (i = 0; i < PCIE_MSI_SET_NUM; i++) {
-		struct mtk_msi_set *msi_set = &port->msi_sets[i];
+		struct mtk_msi_set *msi_set = &pcie->msi_sets[i];
 
-		msi_set->base = port->base + PCIE_MSI_SET_BASE_REG +
+		msi_set->base = pcie->base + PCIE_MSI_SET_BASE_REG +
 				i * PCIE_MSI_SET_OFFSET;
-		msi_set->msg_addr = port->reg_base + PCIE_MSI_SET_BASE_REG +
+		msi_set->msg_addr = pcie->reg_base + PCIE_MSI_SET_BASE_REG +
 				    i * PCIE_MSI_SET_OFFSET;
 
 		/* Configure the MSI capture address */
 		writel_relaxed(lower_32_bits(msi_set->msg_addr), msi_set->base);
 		writel_relaxed(upper_32_bits(msi_set->msg_addr),
-			       port->base + PCIE_MSI_SET_ADDR_HI_BASE +
+			       pcie->base + PCIE_MSI_SET_ADDR_HI_BASE +
 			       i * PCIE_MSI_SET_ADDR_HI_OFFSET);
 	}
 
-	val = readl_relaxed(port->base + PCIE_MSI_SET_ENABLE_REG);
+	val = readl_relaxed(pcie->base + PCIE_MSI_SET_ENABLE_REG);
 	val |= PCIE_MSI_SET_ENABLE;
-	writel_relaxed(val, port->base + PCIE_MSI_SET_ENABLE_REG);
+	writel_relaxed(val, pcie->base + PCIE_MSI_SET_ENABLE_REG);
 
-	val = readl_relaxed(port->base + PCIE_INT_ENABLE_REG);
+	val = readl_relaxed(pcie->base + PCIE_INT_ENABLE_REG);
 	val |= PCIE_MSI_ENABLE;
-	writel_relaxed(val, port->base + PCIE_INT_ENABLE_REG);
+	writel_relaxed(val, pcie->base + PCIE_INT_ENABLE_REG);
 }
 
-static int mtk_pcie_startup_port(struct mtk_pcie_port *port)
+static int mtk_pcie_startup_port(struct mtk_gen3_pcie *pcie)
 {
 	struct resource_entry *entry;
-	struct pci_host_bridge *host = pci_host_bridge_from_priv(port);
+	struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie);
 	unsigned int table_index = 0;
 	int err;
 	u32 val;
 
 	/* Set as RC mode */
-	val = readl_relaxed(port->base + PCIE_SETTING_REG);
+	val = readl_relaxed(pcie->base + PCIE_SETTING_REG);
 	val |= PCIE_RC_MODE;
-	writel_relaxed(val, port->base + PCIE_SETTING_REG);
+	writel_relaxed(val, pcie->base + PCIE_SETTING_REG);
 
 	/* Set class code */
-	val = readl_relaxed(port->base + PCIE_PCI_IDS_1);
+	val = readl_relaxed(pcie->base + PCIE_PCI_IDS_1);
 	val &= ~GENMASK(31, 8);
 	val |= PCI_CLASS(PCI_CLASS_BRIDGE_PCI << 8);
-	writel_relaxed(val, port->base + PCIE_PCI_IDS_1);
+	writel_relaxed(val, pcie->base + PCIE_PCI_IDS_1);
 
 	/* Mask all INTx interrupts */
-	val = readl_relaxed(port->base + PCIE_INT_ENABLE_REG);
+	val = readl_relaxed(pcie->base + PCIE_INT_ENABLE_REG);
 	val &= ~PCIE_INTX_ENABLE;
-	writel_relaxed(val, port->base + PCIE_INT_ENABLE_REG);
+	writel_relaxed(val, pcie->base + PCIE_INT_ENABLE_REG);
+
+	/* Disable DVFSRC voltage request */
+	val = readl_relaxed(pcie->base + PCIE_MISC_CTRL_REG);
+	val |= PCIE_DISABLE_DVFSRC_VLT_REQ;
+	writel_relaxed(val, pcie->base + PCIE_MISC_CTRL_REG);
 
 	/* Assert all reset signals */
-	val = readl_relaxed(port->base + PCIE_RST_CTRL_REG);
+	val = readl_relaxed(pcie->base + PCIE_RST_CTRL_REG);
 	val |= PCIE_MAC_RSTB | PCIE_PHY_RSTB | PCIE_BRG_RSTB | PCIE_PE_RSTB;
-	writel_relaxed(val, port->base + PCIE_RST_CTRL_REG);
+	writel_relaxed(val, pcie->base + PCIE_RST_CTRL_REG);
 
 	/*
-	 * Described in PCIe CEM specification setctions 2.2 (PERST# Signal)
+	 * Described in PCIe CEM specification sections 2.2 (PERST# Signal)
 	 * and 2.2.1 (Initial Power-Up (G3 to S0)).
 	 * The deassertion of PERST# should be delayed 100ms (TPVPERL)
 	 * for the power and clock to become stable.
@@ -312,19 +320,19 @@ static int mtk_pcie_startup_port(struct mtk_pcie_port *port)
 
 	/* De-assert reset signals */
 	val &= ~(PCIE_MAC_RSTB | PCIE_PHY_RSTB | PCIE_BRG_RSTB | PCIE_PE_RSTB);
-	writel_relaxed(val, port->base + PCIE_RST_CTRL_REG);
+	writel_relaxed(val, pcie->base + PCIE_RST_CTRL_REG);
 
 	/* Check if the link is up or not */
-	err = readl_poll_timeout(port->base + PCIE_LINK_STATUS_REG, val,
+	err = readl_poll_timeout(pcie->base + PCIE_LINK_STATUS_REG, val,
 				 !!(val & PCIE_PORT_LINKUP), 20,
 				 PCI_PM_D3COLD_WAIT * USEC_PER_MSEC);
 	if (err) {
-		val = readl_relaxed(port->base + PCIE_LTSSM_STATUS_REG);
-		dev_err(port->dev, "PCIe link down, ltssm reg val: %#x\n", val);
+		val = readl_relaxed(pcie->base + PCIE_LTSSM_STATUS_REG);
+		dev_err(pcie->dev, "PCIe link down, ltssm reg val: %#x\n", val);
 		return err;
 	}
 
-	mtk_pcie_enable_msi(port);
+	mtk_pcie_enable_msi(pcie);
 
 	/* Set PCIe translation windows */
 	resource_list_for_each_entry(entry, &host->windows) {
@@ -347,12 +355,12 @@ static int mtk_pcie_startup_port(struct mtk_pcie_port *port)
 
 		pci_addr = res->start - entry->offset;
 		size = resource_size(res);
-		err = mtk_pcie_set_trans_table(port, cpu_addr, pci_addr, size,
+		err = mtk_pcie_set_trans_table(pcie, cpu_addr, pci_addr, size,
 					       type, table_index);
 		if (err)
 			return err;
 
-		dev_dbg(port->dev, "set %s trans window[%d]: cpu_addr = %#llx, pci_addr = %#llx, size = %#llx\n",
+		dev_dbg(pcie->dev, "set %s trans window[%d]: cpu_addr = %#llx, pci_addr = %#llx, size = %#llx\n",
 			range_type, table_index, (unsigned long long)cpu_addr,
 			(unsigned long long)pci_addr, (unsigned long long)size);
 
@@ -396,7 +404,7 @@ static struct msi_domain_info mtk_msi_domain_info = {
 static void mtk_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 {
 	struct mtk_msi_set *msi_set = irq_data_get_irq_chip_data(data);
-	struct mtk_pcie_port *port = data->domain->host_data;
+	struct mtk_gen3_pcie *pcie = data->domain->host_data;
 	unsigned long hwirq;
 
 	hwirq =	data->hwirq % PCIE_MSI_IRQS_PER_SET;
@@ -404,7 +412,7 @@ static void mtk_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 	msg->address_hi = upper_32_bits(msi_set->msg_addr);
 	msg->address_lo = lower_32_bits(msi_set->msg_addr);
 	msg->data = hwirq;
-	dev_dbg(port->dev, "msi#%#lx address_hi %#x address_lo %#x data %d\n",
+	dev_dbg(pcie->dev, "msi#%#lx address_hi %#x address_lo %#x data %d\n",
 		hwirq, msg->address_hi, msg->address_lo, msg->data);
 }
 
@@ -421,33 +429,33 @@ static void mtk_msi_bottom_irq_ack(struct irq_data *data)
 static void mtk_msi_bottom_irq_mask(struct irq_data *data)
 {
 	struct mtk_msi_set *msi_set = irq_data_get_irq_chip_data(data);
-	struct mtk_pcie_port *port = data->domain->host_data;
+	struct mtk_gen3_pcie *pcie = data->domain->host_data;
 	unsigned long hwirq, flags;
 	u32 val;
 
 	hwirq =	data->hwirq % PCIE_MSI_IRQS_PER_SET;
 
-	raw_spin_lock_irqsave(&port->irq_lock, flags);
+	raw_spin_lock_irqsave(&pcie->irq_lock, flags);
 	val = readl_relaxed(msi_set->base + PCIE_MSI_SET_ENABLE_OFFSET);
 	val &= ~BIT(hwirq);
 	writel_relaxed(val, msi_set->base + PCIE_MSI_SET_ENABLE_OFFSET);
-	raw_spin_unlock_irqrestore(&port->irq_lock, flags);
+	raw_spin_unlock_irqrestore(&pcie->irq_lock, flags);
 }
 
 static void mtk_msi_bottom_irq_unmask(struct irq_data *data)
 {
 	struct mtk_msi_set *msi_set = irq_data_get_irq_chip_data(data);
-	struct mtk_pcie_port *port = data->domain->host_data;
+	struct mtk_gen3_pcie *pcie = data->domain->host_data;
 	unsigned long hwirq, flags;
 	u32 val;
 
 	hwirq =	data->hwirq % PCIE_MSI_IRQS_PER_SET;
 
-	raw_spin_lock_irqsave(&port->irq_lock, flags);
+	raw_spin_lock_irqsave(&pcie->irq_lock, flags);
 	val = readl_relaxed(msi_set->base + PCIE_MSI_SET_ENABLE_OFFSET);
 	val |= BIT(hwirq);
 	writel_relaxed(val, msi_set->base + PCIE_MSI_SET_ENABLE_OFFSET);
-	raw_spin_unlock_irqrestore(&port->irq_lock, flags);
+	raw_spin_unlock_irqrestore(&pcie->irq_lock, flags);
 }
 
 static struct irq_chip mtk_msi_bottom_irq_chip = {
@@ -463,22 +471,22 @@ static int mtk_msi_bottom_domain_alloc(struct irq_domain *domain,
 				       unsigned int virq, unsigned int nr_irqs,
 				       void *arg)
 {
-	struct mtk_pcie_port *port = domain->host_data;
+	struct mtk_gen3_pcie *pcie = domain->host_data;
 	struct mtk_msi_set *msi_set;
 	int i, hwirq, set_idx;
 
-	mutex_lock(&port->lock);
+	mutex_lock(&pcie->lock);
 
-	hwirq = bitmap_find_free_region(port->msi_irq_in_use, PCIE_MSI_IRQS_NUM,
+	hwirq = bitmap_find_free_region(pcie->msi_irq_in_use, PCIE_MSI_IRQS_NUM,
 					order_base_2(nr_irqs));
 
-	mutex_unlock(&port->lock);
+	mutex_unlock(&pcie->lock);
 
 	if (hwirq < 0)
 		return -ENOSPC;
 
 	set_idx = hwirq / PCIE_MSI_IRQS_PER_SET;
-	msi_set = &port->msi_sets[set_idx];
+	msi_set = &pcie->msi_sets[set_idx];
 
 	for (i = 0; i < nr_irqs; i++)
 		irq_domain_set_info(domain, virq + i, hwirq + i,
@@ -491,15 +499,15 @@ static int mtk_msi_bottom_domain_alloc(struct irq_domain *domain,
 static void mtk_msi_bottom_domain_free(struct irq_domain *domain,
 				       unsigned int virq, unsigned int nr_irqs)
 {
-	struct mtk_pcie_port *port = domain->host_data;
+	struct mtk_gen3_pcie *pcie = domain->host_data;
 	struct irq_data *data = irq_domain_get_irq_data(domain, virq);
 
-	mutex_lock(&port->lock);
+	mutex_lock(&pcie->lock);
 
-	bitmap_release_region(port->msi_irq_in_use, data->hwirq,
+	bitmap_release_region(pcie->msi_irq_in_use, data->hwirq,
 			      order_base_2(nr_irqs));
 
-	mutex_unlock(&port->lock);
+	mutex_unlock(&pcie->lock);
 
 	irq_domain_free_irqs_common(domain, virq, nr_irqs);
 }
@@ -511,28 +519,28 @@ static const struct irq_domain_ops mtk_msi_bottom_domain_ops = {
 
 static void mtk_intx_mask(struct irq_data *data)
 {
-	struct mtk_pcie_port *port = irq_data_get_irq_chip_data(data);
+	struct mtk_gen3_pcie *pcie = irq_data_get_irq_chip_data(data);
 	unsigned long flags;
 	u32 val;
 
-	raw_spin_lock_irqsave(&port->irq_lock, flags);
-	val = readl_relaxed(port->base + PCIE_INT_ENABLE_REG);
+	raw_spin_lock_irqsave(&pcie->irq_lock, flags);
+	val = readl_relaxed(pcie->base + PCIE_INT_ENABLE_REG);
 	val &= ~BIT(data->hwirq + PCIE_INTX_SHIFT);
-	writel_relaxed(val, port->base + PCIE_INT_ENABLE_REG);
-	raw_spin_unlock_irqrestore(&port->irq_lock, flags);
+	writel_relaxed(val, pcie->base + PCIE_INT_ENABLE_REG);
+	raw_spin_unlock_irqrestore(&pcie->irq_lock, flags);
 }
 
 static void mtk_intx_unmask(struct irq_data *data)
 {
-	struct mtk_pcie_port *port = irq_data_get_irq_chip_data(data);
+	struct mtk_gen3_pcie *pcie = irq_data_get_irq_chip_data(data);
 	unsigned long flags;
 	u32 val;
 
-	raw_spin_lock_irqsave(&port->irq_lock, flags);
-	val = readl_relaxed(port->base + PCIE_INT_ENABLE_REG);
+	raw_spin_lock_irqsave(&pcie->irq_lock, flags);
+	val = readl_relaxed(pcie->base + PCIE_INT_ENABLE_REG);
 	val |= BIT(data->hwirq + PCIE_INTX_SHIFT);
-	writel_relaxed(val, port->base + PCIE_INT_ENABLE_REG);
-	raw_spin_unlock_irqrestore(&port->irq_lock, flags);
+	writel_relaxed(val, pcie->base + PCIE_INT_ENABLE_REG);
+	raw_spin_unlock_irqrestore(&pcie->irq_lock, flags);
 }
 
 /**
@@ -545,11 +553,11 @@ static void mtk_intx_unmask(struct irq_data *data)
  */
 static void mtk_intx_eoi(struct irq_data *data)
 {
-	struct mtk_pcie_port *port = irq_data_get_irq_chip_data(data);
+	struct mtk_gen3_pcie *pcie = irq_data_get_irq_chip_data(data);
 	unsigned long hwirq;
 
 	hwirq = data->hwirq + PCIE_INTX_SHIFT;
-	writel_relaxed(BIT(hwirq), port->base + PCIE_INT_STATUS_REG);
+	writel_relaxed(BIT(hwirq), pcie->base + PCIE_INT_STATUS_REG);
 }
 
 static struct irq_chip mtk_intx_irq_chip = {
@@ -573,13 +581,13 @@ static const struct irq_domain_ops intx_domain_ops = {
 	.map = mtk_pcie_intx_map,
 };
 
-static int mtk_pcie_init_irq_domains(struct mtk_pcie_port *port)
+static int mtk_pcie_init_irq_domains(struct mtk_gen3_pcie *pcie)
 {
-	struct device *dev = port->dev;
+	struct device *dev = pcie->dev;
 	struct device_node *intc_node, *node = dev->of_node;
 	int ret;
 
-	raw_spin_lock_init(&port->irq_lock);
+	raw_spin_lock_init(&pcie->irq_lock);
 
 	/* Setup INTx */
 	intc_node = of_get_child_by_name(node, "interrupt-controller");
@@ -588,28 +596,28 @@ static int mtk_pcie_init_irq_domains(struct mtk_pcie_port *port)
 		return -ENODEV;
 	}
 
-	port->intx_domain = irq_domain_add_linear(intc_node, PCI_NUM_INTX,
-						  &intx_domain_ops, port);
-	if (!port->intx_domain) {
+	pcie->intx_domain = irq_domain_add_linear(intc_node, PCI_NUM_INTX,
+						  &intx_domain_ops, pcie);
+	if (!pcie->intx_domain) {
 		dev_err(dev, "failed to create INTx IRQ domain\n");
 		return -ENODEV;
 	}
 
 	/* Setup MSI */
-	mutex_init(&port->lock);
+	mutex_init(&pcie->lock);
 
-	port->msi_bottom_domain = irq_domain_add_linear(node, PCIE_MSI_IRQS_NUM,
-				  &mtk_msi_bottom_domain_ops, port);
-	if (!port->msi_bottom_domain) {
+	pcie->msi_bottom_domain = irq_domain_add_linear(node, PCIE_MSI_IRQS_NUM,
+				  &mtk_msi_bottom_domain_ops, pcie);
+	if (!pcie->msi_bottom_domain) {
 		dev_err(dev, "failed to create MSI bottom domain\n");
 		ret = -ENODEV;
 		goto err_msi_bottom_domain;
 	}
 
-	port->msi_domain = pci_msi_create_irq_domain(dev->fwnode,
+	pcie->msi_domain = pci_msi_create_irq_domain(dev->fwnode,
 						     &mtk_msi_domain_info,
-						     port->msi_bottom_domain);
-	if (!port->msi_domain) {
+						     pcie->msi_bottom_domain);
+	if (!pcie->msi_domain) {
 		dev_err(dev, "failed to create MSI domain\n");
 		ret = -ENODEV;
 		goto err_msi_domain;
@@ -618,32 +626,32 @@ static int mtk_pcie_init_irq_domains(struct mtk_pcie_port *port)
 	return 0;
 
 err_msi_domain:
-	irq_domain_remove(port->msi_bottom_domain);
+	irq_domain_remove(pcie->msi_bottom_domain);
 err_msi_bottom_domain:
-	irq_domain_remove(port->intx_domain);
+	irq_domain_remove(pcie->intx_domain);
 
 	return ret;
 }
 
-static void mtk_pcie_irq_teardown(struct mtk_pcie_port *port)
+static void mtk_pcie_irq_teardown(struct mtk_gen3_pcie *pcie)
 {
-	irq_set_chained_handler_and_data(port->irq, NULL, NULL);
+	irq_set_chained_handler_and_data(pcie->irq, NULL, NULL);
 
-	if (port->intx_domain)
-		irq_domain_remove(port->intx_domain);
+	if (pcie->intx_domain)
+		irq_domain_remove(pcie->intx_domain);
 
-	if (port->msi_domain)
-		irq_domain_remove(port->msi_domain);
+	if (pcie->msi_domain)
+		irq_domain_remove(pcie->msi_domain);
 
-	if (port->msi_bottom_domain)
-		irq_domain_remove(port->msi_bottom_domain);
+	if (pcie->msi_bottom_domain)
+		irq_domain_remove(pcie->msi_bottom_domain);
 
-	irq_dispose_mapping(port->irq);
+	irq_dispose_mapping(pcie->irq);
 }
 
-static void mtk_pcie_msi_handler(struct mtk_pcie_port *port, int set_idx)
+static void mtk_pcie_msi_handler(struct mtk_gen3_pcie *pcie, int set_idx)
 {
-	struct mtk_msi_set *msi_set = &port->msi_sets[set_idx];
+	struct mtk_msi_set *msi_set = &pcie->msi_sets[set_idx];
 	unsigned long msi_enable, msi_status;
 	irq_hw_number_t bit, hwirq;
 
@@ -658,59 +666,59 @@ static void mtk_pcie_msi_handler(struct mtk_pcie_port *port, int set_idx)
 
 		for_each_set_bit(bit, &msi_status, PCIE_MSI_IRQS_PER_SET) {
 			hwirq = bit + set_idx * PCIE_MSI_IRQS_PER_SET;
-			generic_handle_domain_irq(port->msi_bottom_domain, hwirq);
+			generic_handle_domain_irq(pcie->msi_bottom_domain, hwirq);
 		}
 	} while (true);
 }
 
 static void mtk_pcie_irq_handler(struct irq_desc *desc)
 {
-	struct mtk_pcie_port *port = irq_desc_get_handler_data(desc);
+	struct mtk_gen3_pcie *pcie = irq_desc_get_handler_data(desc);
 	struct irq_chip *irqchip = irq_desc_get_chip(desc);
 	unsigned long status;
 	irq_hw_number_t irq_bit = PCIE_INTX_SHIFT;
 
 	chained_irq_enter(irqchip, desc);
 
-	status = readl_relaxed(port->base + PCIE_INT_STATUS_REG);
+	status = readl_relaxed(pcie->base + PCIE_INT_STATUS_REG);
 	for_each_set_bit_from(irq_bit, &status, PCI_NUM_INTX +
 			      PCIE_INTX_SHIFT)
-		generic_handle_domain_irq(port->intx_domain,
+		generic_handle_domain_irq(pcie->intx_domain,
 					  irq_bit - PCIE_INTX_SHIFT);
 
 	irq_bit = PCIE_MSI_SHIFT;
 	for_each_set_bit_from(irq_bit, &status, PCIE_MSI_SET_NUM +
 			      PCIE_MSI_SHIFT) {
-		mtk_pcie_msi_handler(port, irq_bit - PCIE_MSI_SHIFT);
+		mtk_pcie_msi_handler(pcie, irq_bit - PCIE_MSI_SHIFT);
 
-		writel_relaxed(BIT(irq_bit), port->base + PCIE_INT_STATUS_REG);
+		writel_relaxed(BIT(irq_bit), pcie->base + PCIE_INT_STATUS_REG);
 	}
 
 	chained_irq_exit(irqchip, desc);
 }
 
-static int mtk_pcie_setup_irq(struct mtk_pcie_port *port)
+static int mtk_pcie_setup_irq(struct mtk_gen3_pcie *pcie)
 {
-	struct device *dev = port->dev;
+	struct device *dev = pcie->dev;
 	struct platform_device *pdev = to_platform_device(dev);
 	int err;
 
-	err = mtk_pcie_init_irq_domains(port);
+	err = mtk_pcie_init_irq_domains(pcie);
 	if (err)
 		return err;
 
-	port->irq = platform_get_irq(pdev, 0);
-	if (port->irq < 0)
-		return port->irq;
+	pcie->irq = platform_get_irq(pdev, 0);
+	if (pcie->irq < 0)
+		return pcie->irq;
 
-	irq_set_chained_handler_and_data(port->irq, mtk_pcie_irq_handler, port);
+	irq_set_chained_handler_and_data(pcie->irq, mtk_pcie_irq_handler, pcie);
 
 	return 0;
 }
 
-static int mtk_pcie_parse_port(struct mtk_pcie_port *port)
+static int mtk_pcie_parse_port(struct mtk_gen3_pcie *pcie)
 {
-	struct device *dev = port->dev;
+	struct device *dev = pcie->dev;
 	struct platform_device *pdev = to_platform_device(dev);
 	struct resource *regs;
 	int ret;
@@ -718,77 +726,77 @@ static int mtk_pcie_parse_port(struct mtk_pcie_port *port)
 	regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcie-mac");
 	if (!regs)
 		return -EINVAL;
-	port->base = devm_ioremap_resource(dev, regs);
-	if (IS_ERR(port->base)) {
+	pcie->base = devm_ioremap_resource(dev, regs);
+	if (IS_ERR(pcie->base)) {
 		dev_err(dev, "failed to map register base\n");
-		return PTR_ERR(port->base);
+		return PTR_ERR(pcie->base);
 	}
 
-	port->reg_base = regs->start;
+	pcie->reg_base = regs->start;
 
-	port->phy_reset = devm_reset_control_get_optional_exclusive(dev, "phy");
-	if (IS_ERR(port->phy_reset)) {
-		ret = PTR_ERR(port->phy_reset);
+	pcie->phy_reset = devm_reset_control_get_optional_exclusive(dev, "phy");
+	if (IS_ERR(pcie->phy_reset)) {
+		ret = PTR_ERR(pcie->phy_reset);
 		if (ret != -EPROBE_DEFER)
 			dev_err(dev, "failed to get PHY reset\n");
 
 		return ret;
 	}
 
-	port->mac_reset = devm_reset_control_get_optional_exclusive(dev, "mac");
-	if (IS_ERR(port->mac_reset)) {
-		ret = PTR_ERR(port->mac_reset);
+	pcie->mac_reset = devm_reset_control_get_optional_exclusive(dev, "mac");
+	if (IS_ERR(pcie->mac_reset)) {
+		ret = PTR_ERR(pcie->mac_reset);
 		if (ret != -EPROBE_DEFER)
 			dev_err(dev, "failed to get MAC reset\n");
 
 		return ret;
 	}
 
-	port->phy = devm_phy_optional_get(dev, "pcie-phy");
-	if (IS_ERR(port->phy)) {
-		ret = PTR_ERR(port->phy);
+	pcie->phy = devm_phy_optional_get(dev, "pcie-phy");
+	if (IS_ERR(pcie->phy)) {
+		ret = PTR_ERR(pcie->phy);
 		if (ret != -EPROBE_DEFER)
 			dev_err(dev, "failed to get PHY\n");
 
 		return ret;
 	}
 
-	port->num_clks = devm_clk_bulk_get_all(dev, &port->clks);
-	if (port->num_clks < 0) {
+	pcie->num_clks = devm_clk_bulk_get_all(dev, &pcie->clks);
+	if (pcie->num_clks < 0) {
 		dev_err(dev, "failed to get clocks\n");
-		return port->num_clks;
+		return pcie->num_clks;
 	}
 
 	return 0;
 }
 
-static int mtk_pcie_power_up(struct mtk_pcie_port *port)
+static int mtk_pcie_power_up(struct mtk_gen3_pcie *pcie)
 {
-	struct device *dev = port->dev;
+	struct device *dev = pcie->dev;
 	int err;
 
 	/* PHY power on and enable pipe clock */
-	reset_control_deassert(port->phy_reset);
+	reset_control_deassert(pcie->phy_reset);
 
-	err = phy_init(port->phy);
+	err = phy_init(pcie->phy);
 	if (err) {
 		dev_err(dev, "failed to initialize PHY\n");
 		goto err_phy_init;
 	}
 
-	err = phy_power_on(port->phy);
+	err = phy_power_on(pcie->phy);
 	if (err) {
 		dev_err(dev, "failed to power on PHY\n");
 		goto err_phy_on;
 	}
 
 	/* MAC power on and enable transaction layer clocks */
-	reset_control_deassert(port->mac_reset);
+	reset_control_deassert(pcie->mac_reset);
 
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
 
-	err = clk_bulk_prepare_enable(port->num_clks, port->clks);
+	err = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks);
 	if (err) {
 		dev_err(dev, "failed to enable clocks\n");
 		goto err_clk_init;
@@ -799,55 +807,55 @@ static int mtk_pcie_power_up(struct mtk_pcie_port *port)
 err_clk_init:
 	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
-	reset_control_assert(port->mac_reset);
-	phy_power_off(port->phy);
+	reset_control_assert(pcie->mac_reset);
+	phy_power_off(pcie->phy);
 err_phy_on:
-	phy_exit(port->phy);
+	phy_exit(pcie->phy);
 err_phy_init:
-	reset_control_assert(port->phy_reset);
+	reset_control_assert(pcie->phy_reset);
 
 	return err;
 }
 
-static void mtk_pcie_power_down(struct mtk_pcie_port *port)
+static void mtk_pcie_power_down(struct mtk_gen3_pcie *pcie)
 {
-	clk_bulk_disable_unprepare(port->num_clks, port->clks);
+	clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks);
 
-	pm_runtime_put_sync(port->dev);
-	pm_runtime_disable(port->dev);
-	reset_control_assert(port->mac_reset);
+	pm_runtime_put_sync(pcie->dev);
+	pm_runtime_disable(pcie->dev);
+	reset_control_assert(pcie->mac_reset);
 
-	phy_power_off(port->phy);
-	phy_exit(port->phy);
-	reset_control_assert(port->phy_reset);
+	phy_power_off(pcie->phy);
+	phy_exit(pcie->phy);
+	reset_control_assert(pcie->phy_reset);
 }
 
-static int mtk_pcie_setup(struct mtk_pcie_port *port)
+static int mtk_pcie_setup(struct mtk_gen3_pcie *pcie)
 {
 	int err;
 
-	err = mtk_pcie_parse_port(port);
+	err = mtk_pcie_parse_port(pcie);
 	if (err)
 		return err;
 
 	/* Don't touch the hardware registers before power up */
-	err = mtk_pcie_power_up(port);
+	err = mtk_pcie_power_up(pcie);
 	if (err)
 		return err;
 
 	/* Try link up */
-	err = mtk_pcie_startup_port(port);
+	err = mtk_pcie_startup_port(pcie);
 	if (err)
 		goto err_setup;
 
-	err = mtk_pcie_setup_irq(port);
+	err = mtk_pcie_setup_irq(pcie);
 	if (err)
 		goto err_setup;
 
 	return 0;
 
 err_setup:
-	mtk_pcie_power_down(port);
+	mtk_pcie_power_down(pcie);
 
 	return err;
 }
@@ -855,30 +863,30 @@ err_setup:
 static int mtk_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct mtk_pcie_port *port;
+	struct mtk_gen3_pcie *pcie;
 	struct pci_host_bridge *host;
 	int err;
 
-	host = devm_pci_alloc_host_bridge(dev, sizeof(*port));
+	host = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
 	if (!host)
 		return -ENOMEM;
 
-	port = pci_host_bridge_priv(host);
+	pcie = pci_host_bridge_priv(host);
 
-	port->dev = dev;
-	platform_set_drvdata(pdev, port);
+	pcie->dev = dev;
+	platform_set_drvdata(pdev, pcie);
 
-	err = mtk_pcie_setup(port);
+	err = mtk_pcie_setup(pcie);
 	if (err)
 		return err;
 
 	host->ops = &mtk_pcie_ops;
-	host->sysdata = port;
+	host->sysdata = pcie;
 
 	err = pci_host_probe(host);
 	if (err) {
-		mtk_pcie_irq_teardown(port);
-		mtk_pcie_power_down(port);
+		mtk_pcie_irq_teardown(pcie);
+		mtk_pcie_power_down(pcie);
 		return err;
 	}
 
@@ -887,66 +895,66 @@ static int mtk_pcie_probe(struct platform_device *pdev)
 
 static int mtk_pcie_remove(struct platform_device *pdev)
 {
-	struct mtk_pcie_port *port = platform_get_drvdata(pdev);
-	struct pci_host_bridge *host = pci_host_bridge_from_priv(port);
+	struct mtk_gen3_pcie *pcie = platform_get_drvdata(pdev);
+	struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie);
 
 	pci_lock_rescan_remove();
 	pci_stop_root_bus(host->bus);
 	pci_remove_root_bus(host->bus);
 	pci_unlock_rescan_remove();
 
-	mtk_pcie_irq_teardown(port);
-	mtk_pcie_power_down(port);
+	mtk_pcie_irq_teardown(pcie);
+	mtk_pcie_power_down(pcie);
 
 	return 0;
 }
 
-static void __maybe_unused mtk_pcie_irq_save(struct mtk_pcie_port *port)
+static void __maybe_unused mtk_pcie_irq_save(struct mtk_gen3_pcie *pcie)
 {
 	int i;
 
-	raw_spin_lock(&port->irq_lock);
+	raw_spin_lock(&pcie->irq_lock);
 
-	port->saved_irq_state = readl_relaxed(port->base + PCIE_INT_ENABLE_REG);
+	pcie->saved_irq_state = readl_relaxed(pcie->base + PCIE_INT_ENABLE_REG);
 
 	for (i = 0; i < PCIE_MSI_SET_NUM; i++) {
-		struct mtk_msi_set *msi_set = &port->msi_sets[i];
+		struct mtk_msi_set *msi_set = &pcie->msi_sets[i];
 
 		msi_set->saved_irq_state = readl_relaxed(msi_set->base +
 					   PCIE_MSI_SET_ENABLE_OFFSET);
 	}
 
-	raw_spin_unlock(&port->irq_lock);
+	raw_spin_unlock(&pcie->irq_lock);
 }
 
-static void __maybe_unused mtk_pcie_irq_restore(struct mtk_pcie_port *port)
+static void __maybe_unused mtk_pcie_irq_restore(struct mtk_gen3_pcie *pcie)
 {
 	int i;
 
-	raw_spin_lock(&port->irq_lock);
+	raw_spin_lock(&pcie->irq_lock);
 
-	writel_relaxed(port->saved_irq_state, port->base + PCIE_INT_ENABLE_REG);
+	writel_relaxed(pcie->saved_irq_state, pcie->base + PCIE_INT_ENABLE_REG);
 
 	for (i = 0; i < PCIE_MSI_SET_NUM; i++) {
-		struct mtk_msi_set *msi_set = &port->msi_sets[i];
+		struct mtk_msi_set *msi_set = &pcie->msi_sets[i];
 
 		writel_relaxed(msi_set->saved_irq_state,
 			       msi_set->base + PCIE_MSI_SET_ENABLE_OFFSET);
 	}
 
-	raw_spin_unlock(&port->irq_lock);
+	raw_spin_unlock(&pcie->irq_lock);
 }
 
-static int __maybe_unused mtk_pcie_turn_off_link(struct mtk_pcie_port *port)
+static int __maybe_unused mtk_pcie_turn_off_link(struct mtk_gen3_pcie *pcie)
 {
 	u32 val;
 
-	val = readl_relaxed(port->base + PCIE_ICMD_PM_REG);
+	val = readl_relaxed(pcie->base + PCIE_ICMD_PM_REG);
 	val |= PCIE_TURN_OFF_LINK;
-	writel_relaxed(val, port->base + PCIE_ICMD_PM_REG);
+	writel_relaxed(val, pcie->base + PCIE_ICMD_PM_REG);
 
 	/* Check the link is L2 */
-	return readl_poll_timeout(port->base + PCIE_LTSSM_STATUS_REG, val,
+	return readl_poll_timeout(pcie->base + PCIE_LTSSM_STATUS_REG, val,
 				  (PCIE_LTSSM_STATE(val) ==
 				   PCIE_LTSSM_STATE_L2_IDLE), 20,
 				   50 * USEC_PER_MSEC);
@@ -954,46 +962,46 @@ static int __maybe_unused mtk_pcie_turn_off_link(struct mtk_pcie_port *port)
 
 static int __maybe_unused mtk_pcie_suspend_noirq(struct device *dev)
 {
-	struct mtk_pcie_port *port = dev_get_drvdata(dev);
+	struct mtk_gen3_pcie *pcie = dev_get_drvdata(dev);
 	int err;
 	u32 val;
 
 	/* Trigger link to L2 state */
-	err = mtk_pcie_turn_off_link(port);
+	err = mtk_pcie_turn_off_link(pcie);
 	if (err) {
-		dev_err(port->dev, "cannot enter L2 state\n");
+		dev_err(pcie->dev, "cannot enter L2 state\n");
 		return err;
 	}
 
 	/* Pull down the PERST# pin */
-	val = readl_relaxed(port->base + PCIE_RST_CTRL_REG);
+	val = readl_relaxed(pcie->base + PCIE_RST_CTRL_REG);
 	val |= PCIE_PE_RSTB;
-	writel_relaxed(val, port->base + PCIE_RST_CTRL_REG);
+	writel_relaxed(val, pcie->base + PCIE_RST_CTRL_REG);
 
-	dev_dbg(port->dev, "entered L2 states successfully");
+	dev_dbg(pcie->dev, "entered L2 states successfully");
 
-	mtk_pcie_irq_save(port);
-	mtk_pcie_power_down(port);
+	mtk_pcie_irq_save(pcie);
+	mtk_pcie_power_down(pcie);
 
 	return 0;
 }
 
 static int __maybe_unused mtk_pcie_resume_noirq(struct device *dev)
 {
-	struct mtk_pcie_port *port = dev_get_drvdata(dev);
+	struct mtk_gen3_pcie *pcie = dev_get_drvdata(dev);
 	int err;
 
-	err = mtk_pcie_power_up(port);
+	err = mtk_pcie_power_up(pcie);
 	if (err)
 		return err;
 
-	err = mtk_pcie_startup_port(port);
+	err = mtk_pcie_startup_port(pcie);
 	if (err) {
-		mtk_pcie_power_down(port);
+		mtk_pcie_power_down(pcie);
 		return err;
 	}
 
-	mtk_pcie_irq_restore(port);
+	mtk_pcie_irq_restore(pcie);
 
 	return 0;
 }
diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index 2f3f974977a3..ddfbd4aebdec 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -365,19 +365,12 @@ static int mtk_pcie_config_read(struct pci_bus *bus, unsigned int devfn,
 {
 	struct mtk_pcie_port *port;
 	u32 bn = bus->number;
-	int ret;
 
 	port = mtk_pcie_find_port(bus, devfn);
-	if (!port) {
-		*val = ~0;
+	if (!port)
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
-
-	ret = mtk_pcie_hw_rd_cfg(port, bn, devfn, where, size, val);
-	if (ret)
-		*val = ~0;
 
-	return ret;
+	return mtk_pcie_hw_rd_cfg(port, bn, devfn, where, size, val);
 }
 
 static int mtk_pcie_config_write(struct pci_bus *bus, unsigned int devfn,
@@ -702,6 +695,13 @@ static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port)
 	 */
 	writel(PCIE_LINKDOWN_RST_EN, port->base + PCIE_RST_CTRL);
 
+	/*
+	 * Described in PCIe CEM specification sections 2.2 (PERST# Signal) and
+	 * 2.2.1 (Initial Power-Up (G3 to S0)). The deassertion of PERST# should
+	 * be delayed 100ms (TPVPERL) for the power and clock to become stable.
+	 */
+	msleep(100);
+
 	/* De-assert PHY, PE, PIPE, MAC and configuration reset	*/
 	val = readl(port->base + PCIE_RST_CTRL);
 	val |= PCIE_PHY_RSTB | PCIE_PERSTB | PCIE_PIPE_SRSTB |
diff --git a/drivers/pci/controller/pcie-microchip-host.c b/drivers/pci/controller/pcie-microchip-host.c
index 329f930d17aa..29d8e81e4181 100644
--- a/drivers/pci/controller/pcie-microchip-host.c
+++ b/drivers/pci/controller/pcie-microchip-host.c
@@ -262,7 +262,7 @@ struct mc_msi {
 	DECLARE_BITMAP(used, MC_NUM_MSI_IRQS);
 };
 
-struct mc_port {
+struct mc_pcie {
 	void __iomem *axi_base_addr;
 	struct device *dev;
 	struct irq_domain *intx_domain;
@@ -382,7 +382,7 @@ static struct {
 
 static char poss_clks[][5] = { "fic0", "fic1", "fic2", "fic3" };
 
-static void mc_pcie_enable_msi(struct mc_port *port, void __iomem *base)
+static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *base)
 {
 	struct mc_msi *msi = &port->msi;
 	u32 cap_offset = MC_MSI_CAP_CTRL_OFFSET;
@@ -405,7 +405,7 @@ static void mc_pcie_enable_msi(struct mc_port *port, void __iomem *base)
 
 static void mc_handle_msi(struct irq_desc *desc)
 {
-	struct mc_port *port = irq_desc_get_handler_data(desc);
+	struct mc_pcie *port = irq_desc_get_handler_data(desc);
 	struct device *dev = port->dev;
 	struct mc_msi *msi = &port->msi;
 	void __iomem *bridge_base_addr =
@@ -428,7 +428,7 @@ static void mc_handle_msi(struct irq_desc *desc)
 
 static void mc_msi_bottom_irq_ack(struct irq_data *data)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
 	u32 bitpos = data->hwirq;
@@ -443,7 +443,7 @@ static void mc_msi_bottom_irq_ack(struct irq_data *data)
 
 static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	phys_addr_t addr = port->msi.vector_phy;
 
 	msg->address_lo = lower_32_bits(addr);
@@ -470,7 +470,7 @@ static struct irq_chip mc_msi_bottom_irq_chip = {
 static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
 				   unsigned int nr_irqs, void *args)
 {
-	struct mc_port *port = domain->host_data;
+	struct mc_pcie *port = domain->host_data;
 	struct mc_msi *msi = &port->msi;
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
@@ -503,7 +503,7 @@ static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
 				   unsigned int nr_irqs)
 {
 	struct irq_data *d = irq_domain_get_irq_data(domain, virq);
-	struct mc_port *port = irq_data_get_irq_chip_data(d);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(d);
 	struct mc_msi *msi = &port->msi;
 
 	mutex_lock(&msi->lock);
@@ -534,7 +534,7 @@ static struct msi_domain_info mc_msi_domain_info = {
 	.chip = &mc_msi_irq_chip,
 };
 
-static int mc_allocate_msi_domains(struct mc_port *port)
+static int mc_allocate_msi_domains(struct mc_pcie *port)
 {
 	struct device *dev = port->dev;
 	struct fwnode_handle *fwnode = of_node_to_fwnode(dev->of_node);
@@ -562,7 +562,7 @@ static int mc_allocate_msi_domains(struct mc_port *port)
 
 static void mc_handle_intx(struct irq_desc *desc)
 {
-	struct mc_port *port = irq_desc_get_handler_data(desc);
+	struct mc_pcie *port = irq_desc_get_handler_data(desc);
 	struct device *dev = port->dev;
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
@@ -585,7 +585,7 @@ static void mc_handle_intx(struct irq_desc *desc)
 
 static void mc_ack_intx_irq(struct irq_data *data)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
 	u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
@@ -595,7 +595,7 @@ static void mc_ack_intx_irq(struct irq_data *data)
 
 static void mc_mask_intx_irq(struct irq_data *data)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
 	unsigned long flags;
@@ -611,7 +611,7 @@ static void mc_mask_intx_irq(struct irq_data *data)
 
 static void mc_unmask_intx_irq(struct irq_data *data)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
 	unsigned long flags;
@@ -698,7 +698,7 @@ static u32 local_events(void __iomem *addr)
 	return val;
 }
 
-static u32 get_events(struct mc_port *port)
+static u32 get_events(struct mc_pcie *port)
 {
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
@@ -715,7 +715,7 @@ static u32 get_events(struct mc_port *port)
 
 static irqreturn_t mc_event_handler(int irq, void *dev_id)
 {
-	struct mc_port *port = dev_id;
+	struct mc_pcie *port = dev_id;
 	struct device *dev = port->dev;
 	struct irq_data *data;
 
@@ -731,7 +731,7 @@ static irqreturn_t mc_event_handler(int irq, void *dev_id)
 
 static void mc_handle_event(struct irq_desc *desc)
 {
-	struct mc_port *port = irq_desc_get_handler_data(desc);
+	struct mc_pcie *port = irq_desc_get_handler_data(desc);
 	unsigned long events;
 	u32 bit;
 	struct irq_chip *chip = irq_desc_get_chip(desc);
@@ -748,7 +748,7 @@ static void mc_handle_event(struct irq_desc *desc)
 
 static void mc_ack_event_irq(struct irq_data *data)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	u32 event = data->hwirq;
 	void __iomem *addr;
 	u32 mask;
@@ -763,7 +763,7 @@ static void mc_ack_event_irq(struct irq_data *data)
 
 static void mc_mask_event_irq(struct irq_data *data)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	u32 event = data->hwirq;
 	void __iomem *addr;
 	u32 mask;
@@ -793,7 +793,7 @@ static void mc_mask_event_irq(struct irq_data *data)
 
 static void mc_unmask_event_irq(struct irq_data *data)
 {
-	struct mc_port *port = irq_data_get_irq_chip_data(data);
+	struct mc_pcie *port = irq_data_get_irq_chip_data(data);
 	u32 event = data->hwirq;
 	void __iomem *addr;
 	u32 mask;
@@ -881,7 +881,7 @@ static int mc_pcie_init_clks(struct device *dev)
 	return 0;
 }
 
-static int mc_pcie_init_irq_domains(struct mc_port *port)
+static int mc_pcie_init_irq_domains(struct mc_pcie *port)
 {
 	struct device *dev = port->dev;
 	struct device_node *node = dev->of_node;
@@ -957,7 +957,7 @@ static void mc_pcie_setup_window(void __iomem *bridge_base_addr, u32 index,
 }
 
 static int mc_pcie_setup_windows(struct platform_device *pdev,
-				 struct mc_port *port)
+				 struct mc_pcie *port)
 {
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
@@ -983,7 +983,7 @@ static int mc_platform_init(struct pci_config_window *cfg)
 {
 	struct device *dev = cfg->parent;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct mc_port *port;
+	struct mc_pcie *port;
 	void __iomem *bridge_base_addr;
 	void __iomem *ctrl_base_addr;
 	int ret;
diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c
index b60dfb45ef7b..3824862ea144 100644
--- a/drivers/pci/controller/pcie-mt7621.c
+++ b/drivers/pci/controller/pcie-mt7621.c
@@ -93,8 +93,8 @@ struct mt7621_pcie_port {
  * reset lines are inverted.
  */
 struct mt7621_pcie {
-	void __iomem *base;
 	struct device *dev;
+	void __iomem *base;
 	struct list_head ports;
 	bool resets_inverted;
 };
@@ -129,7 +129,7 @@ static inline void pcie_port_write(struct mt7621_pcie_port *port,
 	writel_relaxed(val, port->base + reg);
 }
 
-static inline u32 mt7621_pci_get_cfgaddr(unsigned int bus, unsigned int slot,
+static inline u32 mt7621_pcie_get_cfgaddr(unsigned int bus, unsigned int slot,
 					 unsigned int func, unsigned int where)
 {
 	return (((where & 0xf00) >> 8) << 24) | (bus << 16) | (slot << 11) |
@@ -140,7 +140,7 @@ static void __iomem *mt7621_pcie_map_bus(struct pci_bus *bus,
 					 unsigned int devfn, int where)
 {
 	struct mt7621_pcie *pcie = bus->sysdata;
-	u32 address = mt7621_pci_get_cfgaddr(bus->number, PCI_SLOT(devfn),
+	u32 address = mt7621_pcie_get_cfgaddr(bus->number, PCI_SLOT(devfn),
 					     PCI_FUNC(devfn), where);
 
 	writel_relaxed(address, pcie->base + RALINK_PCI_CONFIG_ADDR);
@@ -148,7 +148,7 @@ static void __iomem *mt7621_pcie_map_bus(struct pci_bus *bus,
 	return pcie->base + RALINK_PCI_CONFIG_DATA + (where & 3);
 }
 
-struct pci_ops mt7621_pci_ops = {
+static struct pci_ops mt7621_pcie_ops = {
 	.map_bus	= mt7621_pcie_map_bus,
 	.read		= pci_generic_config_read,
 	.write		= pci_generic_config_write,
@@ -156,7 +156,7 @@ struct pci_ops mt7621_pci_ops = {
 
 static u32 read_config(struct mt7621_pcie *pcie, unsigned int dev, u32 reg)
 {
-	u32 address = mt7621_pci_get_cfgaddr(0, dev, 0, reg);
+	u32 address = mt7621_pcie_get_cfgaddr(0, dev, 0, reg);
 
 	pcie_write(pcie, address, RALINK_PCI_CONFIG_ADDR);
 	return pcie_read(pcie, RALINK_PCI_CONFIG_DATA);
@@ -165,7 +165,7 @@ static u32 read_config(struct mt7621_pcie *pcie, unsigned int dev, u32 reg)
 static void write_config(struct mt7621_pcie *pcie, unsigned int dev,
 			 u32 reg, u32 val)
 {
-	u32 address = mt7621_pci_get_cfgaddr(0, dev, 0, reg);
+	u32 address = mt7621_pcie_get_cfgaddr(0, dev, 0, reg);
 
 	pcie_write(pcie, address, RALINK_PCI_CONFIG_ADDR);
 	pcie_write(pcie, val, RALINK_PCI_CONFIG_DATA);
@@ -208,37 +208,6 @@ static inline void mt7621_control_deassert(struct mt7621_pcie_port *port)
 		reset_control_assert(port->pcie_rst);
 }
 
-static int setup_cm_memory_region(struct pci_host_bridge *host)
-{
-	struct mt7621_pcie *pcie = pci_host_bridge_priv(host);
-	struct device *dev = pcie->dev;
-	struct resource_entry *entry;
-	resource_size_t mask;
-
-	entry = resource_list_first_type(&host->windows, IORESOURCE_MEM);
-	if (!entry) {
-		dev_err(dev, "cannot get memory resource\n");
-		return -EINVAL;
-	}
-
-	if (mips_cps_numiocu(0)) {
-		/*
-		 * FIXME: hardware doesn't accept mask values with 1s after
-		 * 0s (e.g. 0xffef), so it would be great to warn if that's
-		 * about to happen
-		 */
-		mask = ~(entry->res->end - entry->res->start);
-
-		write_gcr_reg1_base(entry->res->start);
-		write_gcr_reg1_mask(mask | CM_GCR_REGn_MASK_CMTGT_IOCU0);
-		dev_info(dev, "PCI coherence region base: 0x%08llx, mask/settings: 0x%08llx\n",
-			 (unsigned long long)read_gcr_reg1_base(),
-			 (unsigned long long)read_gcr_reg1_mask());
-	}
-
-	return 0;
-}
-
 static int mt7621_pcie_parse_port(struct mt7621_pcie *pcie,
 				  struct device_node *node,
 				  int slot)
@@ -505,16 +474,16 @@ static int mt7621_pcie_register_host(struct pci_host_bridge *host)
 {
 	struct mt7621_pcie *pcie = pci_host_bridge_priv(host);
 
-	host->ops = &mt7621_pci_ops;
+	host->ops = &mt7621_pcie_ops;
 	host->sysdata = pcie;
 	return pci_host_probe(host);
 }
 
-static const struct soc_device_attribute mt7621_pci_quirks_match[] = {
+static const struct soc_device_attribute mt7621_pcie_quirks_match[] = {
 	{ .soc_id = "mt7621", .revision = "E2" }
 };
 
-static int mt7621_pci_probe(struct platform_device *pdev)
+static int mt7621_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	const struct soc_device_attribute *attr;
@@ -535,7 +504,7 @@ static int mt7621_pci_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, pcie);
 	INIT_LIST_HEAD(&pcie->ports);
 
-	attr = soc_device_match(mt7621_pci_quirks_match);
+	attr = soc_device_match(mt7621_pcie_quirks_match);
 	if (attr)
 		pcie->resets_inverted = true;
 
@@ -557,12 +526,6 @@ static int mt7621_pci_probe(struct platform_device *pdev)
 		goto remove_resets;
 	}
 
-	err = setup_cm_memory_region(bridge);
-	if (err) {
-		dev_err(dev, "error setting up iocu mem regions\n");
-		goto remove_resets;
-	}
-
 	return mt7621_pcie_register_host(bridge);
 
 remove_resets:
@@ -572,7 +535,7 @@ remove_resets:
 	return err;
 }
 
-static int mt7621_pci_remove(struct platform_device *pdev)
+static int mt7621_pcie_remove(struct platform_device *pdev)
 {
 	struct mt7621_pcie *pcie = platform_get_drvdata(pdev);
 	struct mt7621_pcie_port *port;
@@ -583,18 +546,20 @@ static int mt7621_pci_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id mt7621_pci_ids[] = {
+static const struct of_device_id mt7621_pcie_ids[] = {
 	{ .compatible = "mediatek,mt7621-pci" },
 	{},
 };
-MODULE_DEVICE_TABLE(of, mt7621_pci_ids);
+MODULE_DEVICE_TABLE(of, mt7621_pcie_ids);
 
-static struct platform_driver mt7621_pci_driver = {
-	.probe = mt7621_pci_probe,
-	.remove = mt7621_pci_remove,
+static struct platform_driver mt7621_pcie_driver = {
+	.probe = mt7621_pcie_probe,
+	.remove = mt7621_pcie_remove,
 	.driver = {
 		.name = "mt7621-pci",
-		.of_match_table = of_match_ptr(mt7621_pci_ids),
+		.of_match_table = of_match_ptr(mt7621_pcie_ids),
 	},
 };
-builtin_platform_driver(mt7621_pci_driver);
+builtin_platform_driver(mt7621_pcie_driver);
+
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pci/controller/pcie-rcar-host.c b/drivers/pci/controller/pcie-rcar-host.c
index e12c2d8be05a..38b6e02edfa9 100644
--- a/drivers/pci/controller/pcie-rcar-host.c
+++ b/drivers/pci/controller/pcie-rcar-host.c
@@ -50,10 +50,10 @@ struct rcar_msi {
  */
 static void __iomem *pcie_base;
 /*
- * Static copy of bus clock pointer, so we can check whether the clock
- * is enabled or not.
+ * Static copy of PCIe device pointer, so we can check whether the
+ * device is runtime suspended or not.
  */
-static struct clk *pcie_bus_clk;
+static struct device *pcie_dev;
 #endif
 
 /* Structure representing the PCIe interface */
@@ -159,10 +159,8 @@ static int rcar_pcie_read_conf(struct pci_bus *bus, unsigned int devfn,
 
 	ret = rcar_pcie_config_access(host, RCAR_PCI_ACCESS_READ,
 				      bus, devfn, where, val);
-	if (ret != PCIBIOS_SUCCESSFUL) {
-		*val = 0xffffffff;
+	if (ret != PCIBIOS_SUCCESSFUL)
 		return ret;
-	}
 
 	if (size == 1)
 		*val = (*val >> (BITS_PER_BYTE * (where & 3))) & 0xff;
@@ -792,7 +790,7 @@ static int rcar_pcie_get_resources(struct rcar_pcie_host *host)
 #ifdef CONFIG_ARM
 	/* Cache static copy for L1 link state fixup hook on aarch32 */
 	pcie_base = pcie->base;
-	pcie_bus_clk = host->bus_clk;
+	pcie_dev = pcie->dev;
 #endif
 
 	return 0;
@@ -1062,7 +1060,7 @@ static int rcar_pcie_aarch32_abort_handler(unsigned long addr,
 
 	spin_lock_irqsave(&pmsr_lock, flags);
 
-	if (!pcie_base || !__clk_is_enabled(pcie_bus_clk)) {
+	if (!pcie_base || pm_runtime_suspended(pcie_dev)) {
 		ret = 1;
 		goto unlock_exit;
 	}
diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index c52316d0bfd2..45a28880f322 100644
--- a/drivers/pci/controller/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
@@ -221,10 +221,8 @@ static int rockchip_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
 {
 	struct rockchip_pcie *rockchip = bus->sysdata;
 
-	if (!rockchip_pcie_valid_device(rockchip, bus, PCI_SLOT(devfn))) {
-		*val = 0xffffffff;
+	if (!rockchip_pcie_valid_device(rockchip, bus, PCI_SLOT(devfn)))
 		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
 
 	if (pci_is_root_bus(bus))
 		return rockchip_pcie_rd_own_conf(rockchip, where, size, val);
diff --git a/drivers/pci/controller/pcie-xilinx-cpm.c b/drivers/pci/controller/pcie-xilinx-cpm.c
index 95426df03200..c7cd44ed4dfc 100644
--- a/drivers/pci/controller/pcie-xilinx-cpm.c
+++ b/drivers/pci/controller/pcie-xilinx-cpm.c
@@ -99,10 +99,10 @@
 #define XILINX_CPM_PCIE_REG_PSCR_LNKUP		BIT(11)
 
 /**
- * struct xilinx_cpm_pcie_port - PCIe port information
+ * struct xilinx_cpm_pcie - PCIe port information
+ * @dev: Device pointer
  * @reg_base: Bridge Register Base
  * @cpm_base: CPM System Level Control and Status Register(SLCR) Base
- * @dev: Device pointer
  * @intx_domain: Legacy IRQ domain pointer
  * @cpm_domain: CPM IRQ domain pointer
  * @cfg: Holds mappings of config space window
@@ -110,10 +110,10 @@
  * @irq: Error interrupt number
  * @lock: lock protecting shared register access
  */
-struct xilinx_cpm_pcie_port {
+struct xilinx_cpm_pcie {
+	struct device			*dev;
 	void __iomem			*reg_base;
 	void __iomem			*cpm_base;
-	struct device			*dev;
 	struct irq_domain		*intx_domain;
 	struct irq_domain		*cpm_domain;
 	struct pci_config_window	*cfg;
@@ -122,24 +122,24 @@ struct xilinx_cpm_pcie_port {
 	raw_spinlock_t			lock;
 };
 
-static u32 pcie_read(struct xilinx_cpm_pcie_port *port, u32 reg)
+static u32 pcie_read(struct xilinx_cpm_pcie *port, u32 reg)
 {
 	return readl_relaxed(port->reg_base + reg);
 }
 
-static void pcie_write(struct xilinx_cpm_pcie_port *port,
+static void pcie_write(struct xilinx_cpm_pcie *port,
 		       u32 val, u32 reg)
 {
 	writel_relaxed(val, port->reg_base + reg);
 }
 
-static bool cpm_pcie_link_up(struct xilinx_cpm_pcie_port *port)
+static bool cpm_pcie_link_up(struct xilinx_cpm_pcie *port)
 {
 	return (pcie_read(port, XILINX_CPM_PCIE_REG_PSCR) &
 		XILINX_CPM_PCIE_REG_PSCR_LNKUP);
 }
 
-static void cpm_pcie_clear_err_interrupts(struct xilinx_cpm_pcie_port *port)
+static void cpm_pcie_clear_err_interrupts(struct xilinx_cpm_pcie *port)
 {
 	unsigned long val = pcie_read(port, XILINX_CPM_PCIE_REG_RPEFR);
 
@@ -153,7 +153,7 @@ static void cpm_pcie_clear_err_interrupts(struct xilinx_cpm_pcie_port *port)
 
 static void xilinx_cpm_mask_leg_irq(struct irq_data *data)
 {
-	struct xilinx_cpm_pcie_port *port = irq_data_get_irq_chip_data(data);
+	struct xilinx_cpm_pcie *port = irq_data_get_irq_chip_data(data);
 	unsigned long flags;
 	u32 mask;
 	u32 val;
@@ -167,7 +167,7 @@ static void xilinx_cpm_mask_leg_irq(struct irq_data *data)
 
 static void xilinx_cpm_unmask_leg_irq(struct irq_data *data)
 {
-	struct xilinx_cpm_pcie_port *port = irq_data_get_irq_chip_data(data);
+	struct xilinx_cpm_pcie *port = irq_data_get_irq_chip_data(data);
 	unsigned long flags;
 	u32 mask;
 	u32 val;
@@ -211,7 +211,7 @@ static const struct irq_domain_ops intx_domain_ops = {
 
 static void xilinx_cpm_pcie_intx_flow(struct irq_desc *desc)
 {
-	struct xilinx_cpm_pcie_port *port = irq_desc_get_handler_data(desc);
+	struct xilinx_cpm_pcie *port = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	unsigned long val;
 	int i;
@@ -229,7 +229,7 @@ static void xilinx_cpm_pcie_intx_flow(struct irq_desc *desc)
 
 static void xilinx_cpm_mask_event_irq(struct irq_data *d)
 {
-	struct xilinx_cpm_pcie_port *port = irq_data_get_irq_chip_data(d);
+	struct xilinx_cpm_pcie *port = irq_data_get_irq_chip_data(d);
 	u32 val;
 
 	raw_spin_lock(&port->lock);
@@ -241,7 +241,7 @@ static void xilinx_cpm_mask_event_irq(struct irq_data *d)
 
 static void xilinx_cpm_unmask_event_irq(struct irq_data *d)
 {
-	struct xilinx_cpm_pcie_port *port = irq_data_get_irq_chip_data(d);
+	struct xilinx_cpm_pcie *port = irq_data_get_irq_chip_data(d);
 	u32 val;
 
 	raw_spin_lock(&port->lock);
@@ -273,7 +273,7 @@ static const struct irq_domain_ops event_domain_ops = {
 
 static void xilinx_cpm_pcie_event_flow(struct irq_desc *desc)
 {
-	struct xilinx_cpm_pcie_port *port = irq_desc_get_handler_data(desc);
+	struct xilinx_cpm_pcie *port = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	unsigned long val;
 	int i;
@@ -327,7 +327,7 @@ static const struct {
 
 static irqreturn_t xilinx_cpm_pcie_intr_handler(int irq, void *dev_id)
 {
-	struct xilinx_cpm_pcie_port *port = dev_id;
+	struct xilinx_cpm_pcie *port = dev_id;
 	struct device *dev = port->dev;
 	struct irq_data *d;
 
@@ -350,7 +350,7 @@ static irqreturn_t xilinx_cpm_pcie_intr_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void xilinx_cpm_free_irq_domains(struct xilinx_cpm_pcie_port *port)
+static void xilinx_cpm_free_irq_domains(struct xilinx_cpm_pcie *port)
 {
 	if (port->intx_domain) {
 		irq_domain_remove(port->intx_domain);
@@ -369,7 +369,7 @@ static void xilinx_cpm_free_irq_domains(struct xilinx_cpm_pcie_port *port)
  *
  * Return: '0' on success and error value on failure
  */
-static int xilinx_cpm_pcie_init_irq_domain(struct xilinx_cpm_pcie_port *port)
+static int xilinx_cpm_pcie_init_irq_domain(struct xilinx_cpm_pcie *port)
 {
 	struct device *dev = port->dev;
 	struct device_node *node = dev->of_node;
@@ -410,7 +410,7 @@ out:
 	return -ENOMEM;
 }
 
-static int xilinx_cpm_setup_irq(struct xilinx_cpm_pcie_port *port)
+static int xilinx_cpm_setup_irq(struct xilinx_cpm_pcie *port)
 {
 	struct device *dev = port->dev;
 	struct platform_device *pdev = to_platform_device(dev);
@@ -462,7 +462,7 @@ static int xilinx_cpm_setup_irq(struct xilinx_cpm_pcie_port *port)
  * xilinx_cpm_pcie_init_port - Initialize hardware
  * @port: PCIe port information
  */
-static void xilinx_cpm_pcie_init_port(struct xilinx_cpm_pcie_port *port)
+static void xilinx_cpm_pcie_init_port(struct xilinx_cpm_pcie *port)
 {
 	if (cpm_pcie_link_up(port))
 		dev_info(port->dev, "PCIe Link is UP\n");
@@ -497,7 +497,7 @@ static void xilinx_cpm_pcie_init_port(struct xilinx_cpm_pcie_port *port)
  *
  * Return: '0' on success and error value on failure
  */
-static int xilinx_cpm_pcie_parse_dt(struct xilinx_cpm_pcie_port *port,
+static int xilinx_cpm_pcie_parse_dt(struct xilinx_cpm_pcie *port,
 				    struct resource *bus_range)
 {
 	struct device *dev = port->dev;
@@ -523,7 +523,7 @@ static int xilinx_cpm_pcie_parse_dt(struct xilinx_cpm_pcie_port *port,
 	return 0;
 }
 
-static void xilinx_cpm_free_interrupts(struct xilinx_cpm_pcie_port *port)
+static void xilinx_cpm_free_interrupts(struct xilinx_cpm_pcie *port)
 {
 	irq_set_chained_handler_and_data(port->intx_irq, NULL, NULL);
 	irq_set_chained_handler_and_data(port->irq, NULL, NULL);
@@ -537,7 +537,7 @@ static void xilinx_cpm_free_interrupts(struct xilinx_cpm_pcie_port *port)
  */
 static int xilinx_cpm_pcie_probe(struct platform_device *pdev)
 {
-	struct xilinx_cpm_pcie_port *port;
+	struct xilinx_cpm_pcie *port;
 	struct device *dev = &pdev->dev;
 	struct pci_host_bridge *bridge;
 	struct resource_entry *bus;
diff --git a/drivers/pci/controller/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
index a72b4f9a2b00..40d070e54ad2 100644
--- a/drivers/pci/controller/pcie-xilinx-nwl.c
+++ b/drivers/pci/controller/pcie-xilinx-nwl.c
@@ -146,7 +146,7 @@
 
 struct nwl_msi {			/* MSI information */
 	struct irq_domain *msi_domain;
-	unsigned long *bitmap;
+	DECLARE_BITMAP(bitmap, INT_PCI_MSI_NR);
 	struct irq_domain *dev_domain;
 	struct mutex lock;		/* protect bitmap variable */
 	int irq_msi0;
@@ -335,12 +335,10 @@ static void nwl_pcie_leg_handler(struct irq_desc *desc)
 
 static void nwl_pcie_handle_msi_irq(struct nwl_pcie *pcie, u32 status_reg)
 {
-	struct nwl_msi *msi;
+	struct nwl_msi *msi = &pcie->msi;
 	unsigned long status;
 	u32 bit;
 
-	msi = &pcie->msi;
-
 	while ((status = nwl_bridge_readl(pcie, status_reg)) != 0) {
 		for_each_set_bit(bit, &status, 32) {
 			nwl_bridge_writel(pcie, 1 << bit, status_reg);
@@ -560,30 +558,21 @@ static int nwl_pcie_enable_msi(struct nwl_pcie *pcie)
 	struct nwl_msi *msi = &pcie->msi;
 	unsigned long base;
 	int ret;
-	int size = BITS_TO_LONGS(INT_PCI_MSI_NR) * sizeof(long);
 
 	mutex_init(&msi->lock);
 
-	msi->bitmap = kzalloc(size, GFP_KERNEL);
-	if (!msi->bitmap)
-		return -ENOMEM;
-
 	/* Get msi_1 IRQ number */
 	msi->irq_msi1 = platform_get_irq_byname(pdev, "msi1");
-	if (msi->irq_msi1 < 0) {
-		ret = -EINVAL;
-		goto err;
-	}
+	if (msi->irq_msi1 < 0)
+		return -EINVAL;
 
 	irq_set_chained_handler_and_data(msi->irq_msi1,
 					 nwl_pcie_msi_handler_high, pcie);
 
 	/* Get msi_0 IRQ number */
 	msi->irq_msi0 = platform_get_irq_byname(pdev, "msi0");
-	if (msi->irq_msi0 < 0) {
-		ret = -EINVAL;
-		goto err;
-	}
+	if (msi->irq_msi0 < 0)
+		return -EINVAL;
 
 	irq_set_chained_handler_and_data(msi->irq_msi0,
 					 nwl_pcie_msi_handler_low, pcie);
@@ -592,8 +581,7 @@ static int nwl_pcie_enable_msi(struct nwl_pcie *pcie)
 	ret = nwl_bridge_readl(pcie, I_MSII_CAPABILITIES) & MSII_PRESENT;
 	if (!ret) {
 		dev_err(dev, "MSI not present\n");
-		ret = -EIO;
-		goto err;
+		return -EIO;
 	}
 
 	/* Enable MSII */
@@ -632,10 +620,6 @@ static int nwl_pcie_enable_msi(struct nwl_pcie *pcie)
 	nwl_bridge_writel(pcie, MSGF_MSI_SR_LO_MASK, MSGF_MSI_MASK_LO);
 
 	return 0;
-err:
-	kfree(msi->bitmap);
-	msi->bitmap = NULL;
-	return ret;
 }
 
 static int nwl_pcie_bridge_init(struct nwl_pcie *pcie)
diff --git a/drivers/pci/controller/pcie-xilinx.c b/drivers/pci/controller/pcie-xilinx.c
index aa9bdcebc838..cb6e9f7b0152 100644
--- a/drivers/pci/controller/pcie-xilinx.c
+++ b/drivers/pci/controller/pcie-xilinx.c
@@ -91,18 +91,18 @@
 #define XILINX_NUM_MSI_IRQS		128
 
 /**
- * struct xilinx_pcie_port - PCIe port information
- * @reg_base: IO Mapped Register Base
+ * struct xilinx_pcie - PCIe port information
  * @dev: Device pointer
+ * @reg_base: IO Mapped Register Base
  * @msi_map: Bitmap of allocated MSIs
  * @map_lock: Mutex protecting the MSI allocation
  * @msi_domain: MSI IRQ domain pointer
  * @leg_domain: Legacy IRQ domain pointer
  * @resources: Bus Resources
  */
-struct xilinx_pcie_port {
-	void __iomem *reg_base;
+struct xilinx_pcie {
 	struct device *dev;
+	void __iomem *reg_base;
 	unsigned long msi_map[BITS_TO_LONGS(XILINX_NUM_MSI_IRQS)];
 	struct mutex map_lock;
 	struct irq_domain *msi_domain;
@@ -110,35 +110,35 @@ struct xilinx_pcie_port {
 	struct list_head resources;
 };
 
-static inline u32 pcie_read(struct xilinx_pcie_port *port, u32 reg)
+static inline u32 pcie_read(struct xilinx_pcie *pcie, u32 reg)
 {
-	return readl(port->reg_base + reg);
+	return readl(pcie->reg_base + reg);
 }
 
-static inline void pcie_write(struct xilinx_pcie_port *port, u32 val, u32 reg)
+static inline void pcie_write(struct xilinx_pcie *pcie, u32 val, u32 reg)
 {
-	writel(val, port->reg_base + reg);
+	writel(val, pcie->reg_base + reg);
 }
 
-static inline bool xilinx_pcie_link_up(struct xilinx_pcie_port *port)
+static inline bool xilinx_pcie_link_up(struct xilinx_pcie *pcie)
 {
-	return (pcie_read(port, XILINX_PCIE_REG_PSCR) &
+	return (pcie_read(pcie, XILINX_PCIE_REG_PSCR) &
 		XILINX_PCIE_REG_PSCR_LNKUP) ? 1 : 0;
 }
 
 /**
  * xilinx_pcie_clear_err_interrupts - Clear Error Interrupts
- * @port: PCIe port information
+ * @pcie: PCIe port information
  */
-static void xilinx_pcie_clear_err_interrupts(struct xilinx_pcie_port *port)
+static void xilinx_pcie_clear_err_interrupts(struct xilinx_pcie *pcie)
 {
-	struct device *dev = port->dev;
-	unsigned long val = pcie_read(port, XILINX_PCIE_REG_RPEFR);
+	struct device *dev = pcie->dev;
+	unsigned long val = pcie_read(pcie, XILINX_PCIE_REG_RPEFR);
 
 	if (val & XILINX_PCIE_RPEFR_ERR_VALID) {
 		dev_dbg(dev, "Requester ID %lu\n",
 			val & XILINX_PCIE_RPEFR_REQ_ID);
-		pcie_write(port, XILINX_PCIE_RPEFR_ALL_MASK,
+		pcie_write(pcie, XILINX_PCIE_RPEFR_ALL_MASK,
 			   XILINX_PCIE_REG_RPEFR);
 	}
 }
@@ -152,11 +152,11 @@ static void xilinx_pcie_clear_err_interrupts(struct xilinx_pcie_port *port)
  */
 static bool xilinx_pcie_valid_device(struct pci_bus *bus, unsigned int devfn)
 {
-	struct xilinx_pcie_port *port = bus->sysdata;
+	struct xilinx_pcie *pcie = bus->sysdata;
 
-	/* Check if link is up when trying to access downstream ports */
+	/* Check if link is up when trying to access downstream pcie ports */
 	if (!pci_is_root_bus(bus)) {
-		if (!xilinx_pcie_link_up(port))
+		if (!xilinx_pcie_link_up(pcie))
 			return false;
 	} else if (devfn > 0) {
 		/* Only one device down on each root port */
@@ -177,12 +177,12 @@ static bool xilinx_pcie_valid_device(struct pci_bus *bus, unsigned int devfn)
 static void __iomem *xilinx_pcie_map_bus(struct pci_bus *bus,
 					 unsigned int devfn, int where)
 {
-	struct xilinx_pcie_port *port = bus->sysdata;
+	struct xilinx_pcie *pcie = bus->sysdata;
 
 	if (!xilinx_pcie_valid_device(bus, devfn))
 		return NULL;
 
-	return port->reg_base + PCIE_ECAM_OFFSET(bus->number, devfn, where);
+	return pcie->reg_base + PCIE_ECAM_OFFSET(bus->number, devfn, where);
 }
 
 /* PCIe operations */
@@ -215,7 +215,7 @@ static int xilinx_msi_set_affinity(struct irq_data *d, const struct cpumask *mas
 
 static void xilinx_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 {
-	struct xilinx_pcie_port *pcie = irq_data_get_irq_chip_data(data);
+	struct xilinx_pcie *pcie = irq_data_get_irq_chip_data(data);
 	phys_addr_t pa = ALIGN_DOWN(virt_to_phys(pcie), SZ_4K);
 
 	msg->address_lo = lower_32_bits(pa);
@@ -232,14 +232,14 @@ static struct irq_chip xilinx_msi_bottom_chip = {
 static int xilinx_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
 				  unsigned int nr_irqs, void *args)
 {
-	struct xilinx_pcie_port *port = domain->host_data;
+	struct xilinx_pcie *pcie = domain->host_data;
 	int hwirq, i;
 
-	mutex_lock(&port->map_lock);
+	mutex_lock(&pcie->map_lock);
 
-	hwirq = bitmap_find_free_region(port->msi_map, XILINX_NUM_MSI_IRQS, order_base_2(nr_irqs));
+	hwirq = bitmap_find_free_region(pcie->msi_map, XILINX_NUM_MSI_IRQS, order_base_2(nr_irqs));
 
-	mutex_unlock(&port->map_lock);
+	mutex_unlock(&pcie->map_lock);
 
 	if (hwirq < 0)
 		return -ENOSPC;
@@ -256,13 +256,13 @@ static void xilinx_msi_domain_free(struct irq_domain *domain, unsigned int virq,
 				  unsigned int nr_irqs)
 {
 	struct irq_data *d = irq_domain_get_irq_data(domain, virq);
-	struct xilinx_pcie_port *port = domain->host_data;
+	struct xilinx_pcie *pcie = domain->host_data;
 
-	mutex_lock(&port->map_lock);
+	mutex_lock(&pcie->map_lock);
 
-	bitmap_release_region(port->msi_map, d->hwirq, order_base_2(nr_irqs));
+	bitmap_release_region(pcie->msi_map, d->hwirq, order_base_2(nr_irqs));
 
-	mutex_unlock(&port->map_lock);
+	mutex_unlock(&pcie->map_lock);
 }
 
 static const struct irq_domain_ops xilinx_msi_domain_ops = {
@@ -275,7 +275,7 @@ static struct msi_domain_info xilinx_msi_info = {
 	.chip	= &xilinx_msi_top_chip,
 };
 
-static int xilinx_allocate_msi_domains(struct xilinx_pcie_port *pcie)
+static int xilinx_allocate_msi_domains(struct xilinx_pcie *pcie)
 {
 	struct fwnode_handle *fwnode = dev_fwnode(pcie->dev);
 	struct irq_domain *parent;
@@ -298,7 +298,7 @@ static int xilinx_allocate_msi_domains(struct xilinx_pcie_port *pcie)
 	return 0;
 }
 
-static void xilinx_free_msi_domains(struct xilinx_pcie_port *pcie)
+static void xilinx_free_msi_domains(struct xilinx_pcie *pcie)
 {
 	struct irq_domain *parent = pcie->msi_domain->parent;
 
@@ -342,13 +342,13 @@ static const struct irq_domain_ops intx_domain_ops = {
  */
 static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 {
-	struct xilinx_pcie_port *port = (struct xilinx_pcie_port *)data;
-	struct device *dev = port->dev;
+	struct xilinx_pcie *pcie = (struct xilinx_pcie *)data;
+	struct device *dev = pcie->dev;
 	u32 val, mask, status;
 
 	/* Read interrupt decode and mask registers */
-	val = pcie_read(port, XILINX_PCIE_REG_IDR);
-	mask = pcie_read(port, XILINX_PCIE_REG_IMR);
+	val = pcie_read(pcie, XILINX_PCIE_REG_IDR);
+	mask = pcie_read(pcie, XILINX_PCIE_REG_IMR);
 
 	status = val & mask;
 	if (!status)
@@ -371,23 +371,23 @@ static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 
 	if (status & XILINX_PCIE_INTR_CORRECTABLE) {
 		dev_warn(dev, "Correctable error message\n");
-		xilinx_pcie_clear_err_interrupts(port);
+		xilinx_pcie_clear_err_interrupts(pcie);
 	}
 
 	if (status & XILINX_PCIE_INTR_NONFATAL) {
 		dev_warn(dev, "Non fatal error message\n");
-		xilinx_pcie_clear_err_interrupts(port);
+		xilinx_pcie_clear_err_interrupts(pcie);
 	}
 
 	if (status & XILINX_PCIE_INTR_FATAL) {
 		dev_warn(dev, "Fatal error message\n");
-		xilinx_pcie_clear_err_interrupts(port);
+		xilinx_pcie_clear_err_interrupts(pcie);
 	}
 
 	if (status & (XILINX_PCIE_INTR_INTX | XILINX_PCIE_INTR_MSI)) {
 		struct irq_domain *domain;
 
-		val = pcie_read(port, XILINX_PCIE_REG_RPIFR1);
+		val = pcie_read(pcie, XILINX_PCIE_REG_RPIFR1);
 
 		/* Check whether interrupt valid */
 		if (!(val & XILINX_PCIE_RPIFR1_INTR_VALID)) {
@@ -397,17 +397,17 @@ static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 
 		/* Decode the IRQ number */
 		if (val & XILINX_PCIE_RPIFR1_MSI_INTR) {
-			val = pcie_read(port, XILINX_PCIE_REG_RPIFR2) &
+			val = pcie_read(pcie, XILINX_PCIE_REG_RPIFR2) &
 				XILINX_PCIE_RPIFR2_MSG_DATA;
-			domain = port->msi_domain->parent;
+			domain = pcie->msi_domain->parent;
 		} else {
 			val = (val & XILINX_PCIE_RPIFR1_INTR_MASK) >>
 				XILINX_PCIE_RPIFR1_INTR_SHIFT;
-			domain = port->leg_domain;
+			domain = pcie->leg_domain;
 		}
 
 		/* Clear interrupt FIFO register 1 */
-		pcie_write(port, XILINX_PCIE_RPIFR1_ALL_MASK,
+		pcie_write(pcie, XILINX_PCIE_RPIFR1_ALL_MASK,
 			   XILINX_PCIE_REG_RPIFR1);
 
 		generic_handle_domain_irq(domain, val);
@@ -442,20 +442,20 @@ static irqreturn_t xilinx_pcie_intr_handler(int irq, void *data)
 
 error:
 	/* Clear the Interrupt Decode register */
-	pcie_write(port, status, XILINX_PCIE_REG_IDR);
+	pcie_write(pcie, status, XILINX_PCIE_REG_IDR);
 
 	return IRQ_HANDLED;
 }
 
 /**
  * xilinx_pcie_init_irq_domain - Initialize IRQ domain
- * @port: PCIe port information
+ * @pcie: PCIe port information
  *
  * Return: '0' on success and error value on failure
  */
-static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
+static int xilinx_pcie_init_irq_domain(struct xilinx_pcie *pcie)
 {
-	struct device *dev = port->dev;
+	struct device *dev = pcie->dev;
 	struct device_node *pcie_intc_node;
 	int ret;
 
@@ -466,25 +466,25 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
 		return -ENODEV;
 	}
 
-	port->leg_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX,
+	pcie->leg_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX,
 						 &intx_domain_ops,
-						 port);
+						 pcie);
 	of_node_put(pcie_intc_node);
-	if (!port->leg_domain) {
+	if (!pcie->leg_domain) {
 		dev_err(dev, "Failed to get a INTx IRQ domain\n");
 		return -ENODEV;
 	}
 
 	/* Setup MSI */
 	if (IS_ENABLED(CONFIG_PCI_MSI)) {
-		phys_addr_t pa = ALIGN_DOWN(virt_to_phys(port), SZ_4K);
+		phys_addr_t pa = ALIGN_DOWN(virt_to_phys(pcie), SZ_4K);
 
-		ret = xilinx_allocate_msi_domains(port);
+		ret = xilinx_allocate_msi_domains(pcie);
 		if (ret)
 			return ret;
 
-		pcie_write(port, upper_32_bits(pa), XILINX_PCIE_REG_MSIBASE1);
-		pcie_write(port, lower_32_bits(pa), XILINX_PCIE_REG_MSIBASE2);
+		pcie_write(pcie, upper_32_bits(pa), XILINX_PCIE_REG_MSIBASE1);
+		pcie_write(pcie, lower_32_bits(pa), XILINX_PCIE_REG_MSIBASE2);
 	}
 
 	return 0;
@@ -492,44 +492,44 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
 
 /**
  * xilinx_pcie_init_port - Initialize hardware
- * @port: PCIe port information
+ * @pcie: PCIe port information
  */
-static void xilinx_pcie_init_port(struct xilinx_pcie_port *port)
+static void xilinx_pcie_init_port(struct xilinx_pcie *pcie)
 {
-	struct device *dev = port->dev;
+	struct device *dev = pcie->dev;
 
-	if (xilinx_pcie_link_up(port))
+	if (xilinx_pcie_link_up(pcie))
 		dev_info(dev, "PCIe Link is UP\n");
 	else
 		dev_info(dev, "PCIe Link is DOWN\n");
 
 	/* Disable all interrupts */
-	pcie_write(port, ~XILINX_PCIE_IDR_ALL_MASK,
+	pcie_write(pcie, ~XILINX_PCIE_IDR_ALL_MASK,
 		   XILINX_PCIE_REG_IMR);
 
 	/* Clear pending interrupts */
-	pcie_write(port, pcie_read(port, XILINX_PCIE_REG_IDR) &
+	pcie_write(pcie, pcie_read(pcie, XILINX_PCIE_REG_IDR) &
 			 XILINX_PCIE_IMR_ALL_MASK,
 		   XILINX_PCIE_REG_IDR);
 
 	/* Enable all interrupts we handle */
-	pcie_write(port, XILINX_PCIE_IMR_ENABLE_MASK, XILINX_PCIE_REG_IMR);
+	pcie_write(pcie, XILINX_PCIE_IMR_ENABLE_MASK, XILINX_PCIE_REG_IMR);
 
 	/* Enable the Bridge enable bit */
-	pcie_write(port, pcie_read(port, XILINX_PCIE_REG_RPSC) |
+	pcie_write(pcie, pcie_read(pcie, XILINX_PCIE_REG_RPSC) |
 			 XILINX_PCIE_REG_RPSC_BEN,
 		   XILINX_PCIE_REG_RPSC);
 }
 
 /**
  * xilinx_pcie_parse_dt - Parse Device tree
- * @port: PCIe port information
+ * @pcie: PCIe port information
  *
  * Return: '0' on success and error value on failure
  */
-static int xilinx_pcie_parse_dt(struct xilinx_pcie_port *port)
+static int xilinx_pcie_parse_dt(struct xilinx_pcie *pcie)
 {
-	struct device *dev = port->dev;
+	struct device *dev = pcie->dev;
 	struct device_node *node = dev->of_node;
 	struct resource regs;
 	unsigned int irq;
@@ -541,14 +541,14 @@ static int xilinx_pcie_parse_dt(struct xilinx_pcie_port *port)
 		return err;
 	}
 
-	port->reg_base = devm_pci_remap_cfg_resource(dev, &regs);
-	if (IS_ERR(port->reg_base))
-		return PTR_ERR(port->reg_base);
+	pcie->reg_base = devm_pci_remap_cfg_resource(dev, &regs);
+	if (IS_ERR(pcie->reg_base))
+		return PTR_ERR(pcie->reg_base);
 
 	irq = irq_of_parse_and_map(node, 0);
 	err = devm_request_irq(dev, irq, xilinx_pcie_intr_handler,
 			       IRQF_SHARED | IRQF_NO_THREAD,
-			       "xilinx-pcie", port);
+			       "xilinx-pcie", pcie);
 	if (err) {
 		dev_err(dev, "unable to request irq %d\n", irq);
 		return err;
@@ -566,41 +566,41 @@ static int xilinx_pcie_parse_dt(struct xilinx_pcie_port *port)
 static int xilinx_pcie_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct xilinx_pcie_port *port;
+	struct xilinx_pcie *pcie;
 	struct pci_host_bridge *bridge;
 	int err;
 
 	if (!dev->of_node)
 		return -ENODEV;
 
-	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*port));
+	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
 	if (!bridge)
 		return -ENODEV;
 
-	port = pci_host_bridge_priv(bridge);
-	mutex_init(&port->map_lock);
-	port->dev = dev;
+	pcie = pci_host_bridge_priv(bridge);
+	mutex_init(&pcie->map_lock);
+	pcie->dev = dev;
 
-	err = xilinx_pcie_parse_dt(port);
+	err = xilinx_pcie_parse_dt(pcie);
 	if (err) {
 		dev_err(dev, "Parsing DT failed\n");
 		return err;
 	}
 
-	xilinx_pcie_init_port(port);
+	xilinx_pcie_init_port(pcie);
 
-	err = xilinx_pcie_init_irq_domain(port);
+	err = xilinx_pcie_init_irq_domain(pcie);
 	if (err) {
 		dev_err(dev, "Failed creating IRQ Domain\n");
 		return err;
 	}
 
-	bridge->sysdata = port;
+	bridge->sysdata = pcie;
 	bridge->ops = &xilinx_pcie_ops;
 
 	err = pci_host_probe(bridge);
 	if (err)
-		xilinx_free_msi_domains(port);
+		xilinx_free_msi_domains(pcie);
 
 	return err;
 }
diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c
index a45e8e59d3d4..cc166c683638 100644
--- a/drivers/pci/controller/vmd.c
+++ b/drivers/pci/controller/vmd.c
@@ -501,6 +501,40 @@ static inline void vmd_acpi_begin(void) { }
 static inline void vmd_acpi_end(void) { }
 #endif /* CONFIG_ACPI */
 
+static void vmd_domain_reset(struct vmd_dev *vmd)
+{
+	u16 bus, max_buses = resource_size(&vmd->resources[0]);
+	u8 dev, functions, fn, hdr_type;
+	char __iomem *base;
+
+	for (bus = 0; bus < max_buses; bus++) {
+		for (dev = 0; dev < 32; dev++) {
+			base = vmd->cfgbar + PCIE_ECAM_OFFSET(bus,
+						PCI_DEVFN(dev, 0), 0);
+
+			hdr_type = readb(base + PCI_HEADER_TYPE) &
+					 PCI_HEADER_TYPE_MASK;
+
+			functions = (hdr_type & 0x80) ? 8 : 1;
+			for (fn = 0; fn < functions; fn++) {
+				base = vmd->cfgbar + PCIE_ECAM_OFFSET(bus,
+						PCI_DEVFN(dev, fn), 0);
+
+				hdr_type = readb(base + PCI_HEADER_TYPE) &
+						PCI_HEADER_TYPE_MASK;
+
+				if (hdr_type != PCI_HEADER_TYPE_BRIDGE ||
+				    (readw(base + PCI_CLASS_DEVICE) !=
+				     PCI_CLASS_BRIDGE_PCI))
+					continue;
+
+				memset_io(base + PCI_IO_BASE, 0,
+					  PCI_ROM_ADDRESS1 - PCI_IO_BASE);
+			}
+		}
+	}
+}
+
 static void vmd_attach_resources(struct vmd_dev *vmd)
 {
 	vmd->dev->resource[VMD_MEMBAR1].child = &vmd->resources[1];
@@ -541,7 +575,7 @@ static int vmd_get_phys_offsets(struct vmd_dev *vmd, bool native_hint,
 		int ret;
 
 		ret = pci_read_config_dword(dev, PCI_REG_VMLOCK, &vmlock);
-		if (ret || vmlock == ~0)
+		if (ret || PCI_POSSIBLE_ERROR(vmlock))
 			return -ENODEV;
 
 		if (MB2_SHADOW_EN(vmlock)) {
@@ -661,6 +695,21 @@ static int vmd_alloc_irqs(struct vmd_dev *vmd)
 	return 0;
 }
 
+/*
+ * Since VMD is an aperture to regular PCIe root ports, only allow it to
+ * control features that the OS is allowed to control on the physical PCI bus.
+ */
+static void vmd_copy_host_bridge_flags(struct pci_host_bridge *root_bridge,
+				       struct pci_host_bridge *vmd_bridge)
+{
+	vmd_bridge->native_pcie_hotplug = root_bridge->native_pcie_hotplug;
+	vmd_bridge->native_shpc_hotplug = root_bridge->native_shpc_hotplug;
+	vmd_bridge->native_aer = root_bridge->native_aer;
+	vmd_bridge->native_pme = root_bridge->native_pme;
+	vmd_bridge->native_ltr = root_bridge->native_ltr;
+	vmd_bridge->native_dpc = root_bridge->native_dpc;
+}
+
 static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
 {
 	struct pci_sysdata *sd = &vmd->sysdata;
@@ -798,6 +847,9 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
 		return -ENODEV;
 	}
 
+	vmd_copy_host_bridge_flags(pci_find_host_bridge(vmd->dev->bus),
+				   to_pci_host_bridge(vmd->bus->bridge));
+
 	vmd_attach_resources(vmd);
 	if (vmd->irq_domain)
 		dev_set_msi_domain(&vmd->bus->dev, vmd->irq_domain);
@@ -805,6 +857,9 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features)
 	vmd_acpi_begin();
 
 	pci_scan_child_bus(vmd->bus);
+	vmd_domain_reset(vmd);
+	list_for_each_entry(child, &vmd->bus->children, node)
+		pci_reset_bus(child->self);
 	pci_assign_unassigned_bus_resources(vmd->bus);
 
 	/*
@@ -953,6 +1008,10 @@ static const struct pci_device_id vmd_ids[] = {
 		.driver_data = VMD_FEAT_HAS_MEMBAR_SHADOW_VSCAP |
 				VMD_FEAT_HAS_BUS_RESTRICTIONS |
 				VMD_FEAT_OFFSET_FIRST_VECTOR,},
+	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa77f),
+		.driver_data = VMD_FEAT_HAS_MEMBAR_SHADOW_VSCAP |
+				VMD_FEAT_HAS_BUS_RESTRICTIONS |
+				VMD_FEAT_OFFSET_FIRST_VECTOR,},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_VMD_9A0B),
 		.driver_data = VMD_FEAT_HAS_MEMBAR_SHADOW_VSCAP |
 				VMD_FEAT_HAS_BUS_RESTRICTIONS |
diff --git a/drivers/pci/endpoint/functions/pci-epf-ntb.c b/drivers/pci/endpoint/functions/pci-epf-ntb.c
index 5a03401f4571..9a00448c7e61 100644
--- a/drivers/pci/endpoint/functions/pci-epf-ntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-ntb.c
@@ -1262,7 +1262,7 @@ static void epf_ntb_db_mw_bar_cleanup(struct epf_ntb *ntb,
 }
 
 /**
- * epf_ntb_configure_interrupt() - Configure MSI/MSI-X capaiblity
+ * epf_ntb_configure_interrupt() - Configure MSI/MSI-X capability
  * @ntb: NTB device that facilitates communication between HOST1 and HOST2
  * @type: PRIMARY interface or SECONDARY interface
  *
diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index 38621558d397..3bc9273d0a08 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -334,7 +334,7 @@ int pci_epc_set_msi(struct pci_epc *epc, u8 func_no, u8 vfunc_no, u8 interrupts)
 	u8 encode_int;
 
 	if (IS_ERR_OR_NULL(epc) || func_no >= epc->max_functions ||
-	    interrupts > 32)
+	    interrupts < 1 || interrupts > 32)
 		return -EINVAL;
 
 	if (vfunc_no > 0 && (!epc->max_vfs || vfunc_no > epc->max_vfs[func_no]))
diff --git a/drivers/pci/hotplug/TODO b/drivers/pci/hotplug/TODO
index cc6194aa24c1..88f217c82b4f 100644
--- a/drivers/pci/hotplug/TODO
+++ b/drivers/pci/hotplug/TODO
@@ -30,11 +30,6 @@ ibmphp:
   or ibmphp should store a pointer to its bus in struct slot.  Probably the
   former.
 
-* The functions get_max_adapter_speed() and get_bus_name() are commented out.
-  Can they be deleted?  There are also forward declarations at the top of
-  ibmphp_core.c as well as pointers in ibmphp_hotplug_slot_ops, likewise
-  commented out.
-
 * ibmphp_init_devno() takes a struct slot **, it could instead take a
   struct slot *.
 
diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index ed7b58eb64d2..93fd2a621822 100644
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -2273,7 +2273,7 @@ static u32 configure_new_device(struct controller  *ctrl, struct pci_func  *func
 		while ((function < max_functions) && (!stop_it)) {
 			pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID);
 
-			if (ID == 0xFFFFFFFF) {
+			if (PCI_POSSIBLE_ERROR(ID)) {
 				function++;
 			} else {
 				/* Setup slot structure. */
@@ -2517,7 +2517,7 @@ static int configure_new_function(struct controller *ctrl, struct pci_func *func
 			pci_bus_read_config_dword(pci_bus, PCI_DEVFN(device, 0), 0x00, &ID);
 			pci_bus->number = func->bus;
 
-			if (ID != 0xFFFFFFFF) {	  /*  device present */
+			if (!PCI_POSSIBLE_ERROR(ID)) {	  /*  device present */
 				/* Setup slot structure. */
 				new_slot = cpqhp_slot_create(hold_bus_node->base);
 
diff --git a/drivers/pci/hotplug/ibmphp_core.c b/drivers/pci/hotplug/ibmphp_core.c
index 17124254d897..197997e264a2 100644
--- a/drivers/pci/hotplug/ibmphp_core.c
+++ b/drivers/pci/hotplug/ibmphp_core.c
@@ -50,14 +50,6 @@ static int irqs[16];    /* PIC mode IRQs we're using so far (in case MPS
 
 static int init_flag;
 
-/*
-static int get_max_adapter_speed_1 (struct hotplug_slot *, u8 *, u8);
-
-static inline int get_max_adapter_speed (struct hotplug_slot *hs, u8 *value)
-{
-	return get_max_adapter_speed_1 (hs, value, 1);
-}
-*/
 static inline int get_cur_bus_info(struct slot **sl)
 {
 	int rc = 1;
@@ -401,69 +393,6 @@ static int get_max_bus_speed(struct slot *slot)
 	return rc;
 }
 
-/*
-static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 *value, u8 flag)
-{
-	int rc = -ENODEV;
-	struct slot *pslot;
-	struct slot myslot;
-
-	debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n",
-						(ulong)hotplug_slot, (ulong) value);
-
-	if (flag)
-		ibmphp_lock_operations();
-
-	if (hotplug_slot && value) {
-		pslot = hotplug_slot->private;
-		if (pslot) {
-			memcpy(&myslot, pslot, sizeof(struct slot));
-			rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS,
-						&(myslot.status));
-
-			if (!(SLOT_LATCH (myslot.status)) &&
-					(SLOT_PRESENT (myslot.status))) {
-				rc = ibmphp_hpc_readslot(pslot,
-						READ_EXTSLOTSTATUS,
-						&(myslot.ext_status));
-				if (!rc)
-					*value = SLOT_SPEED(myslot.ext_status);
-			} else
-				*value = MAX_ADAPTER_NONE;
-		}
-	}
-
-	if (flag)
-		ibmphp_unlock_operations();
-
-	debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value);
-	return rc;
-}
-
-static int get_bus_name(struct hotplug_slot *hotplug_slot, char *value)
-{
-	int rc = -ENODEV;
-	struct slot *pslot = NULL;
-
-	debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot);
-
-	ibmphp_lock_operations();
-
-	if (hotplug_slot) {
-		pslot = hotplug_slot->private;
-		if (pslot) {
-			rc = 0;
-			snprintf(value, 100, "Bus %x", pslot->bus);
-		}
-	} else
-		rc = -ENODEV;
-
-	ibmphp_unlock_operations();
-	debug("get_bus_name - Exit rc[%d] value[%x]\n", rc, *value);
-	return rc;
-}
-*/
-
 /****************************************************************************
  * This routine will initialize the ops data structure used in the validate
  * function. It will also power off empty slots that are powered on since BIOS
@@ -1231,9 +1160,6 @@ const struct hotplug_slot_ops ibmphp_hotplug_slot_ops = {
 	.get_attention_status =		get_attention_status,
 	.get_latch_status =		get_latch_status,
 	.get_adapter_status =		get_adapter_present,
-/*	.get_max_adapter_speed =	get_max_adapter_speed,
-	.get_bus_name_status =		get_bus_name,
-*/
 };
 
 static void ibmphp_unload(void)
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 918dccbc74b6..e0a614acee05 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -75,6 +75,8 @@ extern int pciehp_poll_time;
  * @reset_lock: prevents access to the Data Link Layer Link Active bit in the
  *	Link Status register and to the Presence Detect State bit in the Slot
  *	Status register during a slot reset which may cause them to flap
+ * @depth: Number of additional hotplug ports in the path to the root bus,
+ *	used as lock subclass for @reset_lock
  * @ist_running: flag to keep user request waiting while IRQ thread is running
  * @request_result: result of last user request submitted to the IRQ thread
  * @requester: wait queue to wake up on completion of user request,
@@ -106,6 +108,7 @@ struct controller {
 
 	struct hotplug_slot hotplug_slot;	/* hotplug core interface */
 	struct rw_semaphore reset_lock;
+	unsigned int depth;
 	unsigned int ist_running;
 	int request_result;
 	wait_queue_head_t requester;
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index f34114d45259..4042d87d539d 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -166,7 +166,7 @@ static void pciehp_check_presence(struct controller *ctrl)
 {
 	int occupied;
 
-	down_read(&ctrl->reset_lock);
+	down_read_nested(&ctrl->reset_lock, ctrl->depth);
 	mutex_lock(&ctrl->state_lock);
 
 	occupied = pciehp_card_present_or_link_active(ctrl);
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 83a0fa119cae..1c1ebf3dad43 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -89,7 +89,7 @@ static int pcie_poll_cmd(struct controller *ctrl, int timeout)
 
 	do {
 		pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);
-		if (slot_status == (u16) ~0) {
+		if (PCI_POSSIBLE_ERROR(slot_status)) {
 			ctrl_info(ctrl, "%s: no response from device\n",
 				  __func__);
 			return 0;
@@ -165,7 +165,7 @@ static void pcie_do_write_cmd(struct controller *ctrl, u16 cmd,
 	pcie_wait_cmd(ctrl);
 
 	pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &slot_ctrl);
-	if (slot_ctrl == (u16) ~0) {
+	if (PCI_POSSIBLE_ERROR(slot_ctrl)) {
 		ctrl_info(ctrl, "%s: no response from device\n", __func__);
 		goto out;
 	}
@@ -236,7 +236,7 @@ int pciehp_check_link_active(struct controller *ctrl)
 	int ret;
 
 	ret = pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lnk_status);
-	if (ret == PCIBIOS_DEVICE_NOT_FOUND || lnk_status == (u16)~0)
+	if (ret == PCIBIOS_DEVICE_NOT_FOUND || PCI_POSSIBLE_ERROR(lnk_status))
 		return -ENODEV;
 
 	ret = !!(lnk_status & PCI_EXP_LNKSTA_DLLLA);
@@ -443,7 +443,7 @@ int pciehp_card_present(struct controller *ctrl)
 	int ret;
 
 	ret = pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);
-	if (ret == PCIBIOS_DEVICE_NOT_FOUND || slot_status == (u16)~0)
+	if (ret == PCIBIOS_DEVICE_NOT_FOUND || PCI_POSSIBLE_ERROR(slot_status))
 		return -ENODEV;
 
 	return !!(slot_status & PCI_EXP_SLTSTA_PDS);
@@ -583,7 +583,7 @@ static void pciehp_ignore_dpc_link_change(struct controller *ctrl,
 	 * the corresponding link change may have been ignored above.
 	 * Synthesize it to ensure that it is acted on.
 	 */
-	down_read(&ctrl->reset_lock);
+	down_read_nested(&ctrl->reset_lock, ctrl->depth);
 	if (!pciehp_check_link_active(ctrl))
 		pciehp_request(ctrl, PCI_EXP_SLTSTA_DLLSC);
 	up_read(&ctrl->reset_lock);
@@ -621,7 +621,7 @@ static irqreturn_t pciehp_isr(int irq, void *dev_id)
 
 read_status:
 	pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &status);
-	if (status == (u16) ~0) {
+	if (PCI_POSSIBLE_ERROR(status)) {
 		ctrl_info(ctrl, "%s: no response from device\n", __func__);
 		if (parent)
 			pm_runtime_put(parent);
@@ -642,6 +642,8 @@ read_status:
 	 */
 	if (ctrl->power_fault_detected)
 		status &= ~PCI_EXP_SLTSTA_PFD;
+	else if (status & PCI_EXP_SLTSTA_PFD)
+		ctrl->power_fault_detected = true;
 
 	events |= status;
 	if (!events) {
@@ -651,7 +653,7 @@ read_status:
 	}
 
 	if (status) {
-		pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, events);
+		pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, status);
 
 		/*
 		 * In MSI mode, all event bits must be zero before the port
@@ -725,8 +727,7 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id)
 	}
 
 	/* Check Power Fault Detected */
-	if ((events & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) {
-		ctrl->power_fault_detected = 1;
+	if (events & PCI_EXP_SLTSTA_PFD) {
 		ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(ctrl));
 		pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
 				      PCI_EXP_SLTCTL_ATTN_IND_ON);
@@ -746,7 +747,7 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id)
 	 * Disable requests have higher priority than Presence Detect Changed
 	 * or Data Link Layer State Changed events.
 	 */
-	down_read(&ctrl->reset_lock);
+	down_read_nested(&ctrl->reset_lock, ctrl->depth);
 	if (events & DISABLE_SLOT)
 		pciehp_handle_disable_request(ctrl);
 	else if (events & (PCI_EXP_SLTSTA_PDC | PCI_EXP_SLTSTA_DLLSC))
@@ -906,7 +907,7 @@ int pciehp_reset_slot(struct hotplug_slot *hotplug_slot, bool probe)
 	if (probe)
 		return 0;
 
-	down_write(&ctrl->reset_lock);
+	down_write_nested(&ctrl->reset_lock, ctrl->depth);
 
 	if (!ATTN_BUTTN(ctrl)) {
 		ctrl_mask |= PCI_EXP_SLTCTL_PDCE;
@@ -962,6 +963,20 @@ static inline void dbg_ctrl(struct controller *ctrl)
 
 #define FLAG(x, y)	(((x) & (y)) ? '+' : '-')
 
+static inline int pcie_hotplug_depth(struct pci_dev *dev)
+{
+	struct pci_bus *bus = dev->bus;
+	int depth = 0;
+
+	while (bus->parent) {
+		bus = bus->parent;
+		if (bus->self && bus->self->is_hotplug_bridge)
+			depth++;
+	}
+
+	return depth;
+}
+
 struct controller *pcie_init(struct pcie_device *dev)
 {
 	struct controller *ctrl;
@@ -975,6 +990,7 @@ struct controller *pcie_init(struct pcie_device *dev)
 		return NULL;
 
 	ctrl->pcie = dev;
+	ctrl->depth = pcie_hotplug_depth(dev->port);
 	pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP, &slot_cap);
 
 	if (pdev->hotplug_user_indicators)
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 0b1237cff239..cb2e8351c2cc 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -247,7 +247,7 @@ void of_pci_check_probe_only(void)
 	else
 		pci_clear_flags(PCI_PROBE_ONLY);
 
-	pr_info("PROBE_ONLY %sabled\n", val ? "en" : "dis");
+	pr_info("PROBE_ONLY %s\n", val ? "enabled" : "disabled");
 }
 EXPORT_SYMBOL_GPL(of_pci_check_probe_only);
 
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index 454d5f6f16ff..1015274bd2fe 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -710,7 +710,7 @@ void *pci_alloc_p2pmem(struct pci_dev *pdev, size_t size)
 	if (!ret)
 		goto out;
 
-	if (unlikely(!percpu_ref_tryget_live(ref))) {
+	if (unlikely(!percpu_ref_tryget_live_rcu(ref))) {
 		gen_pool_free(p2pdma->pool, (unsigned long) ret, size);
 		ret = NULL;
 		goto out;
diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c
index db97cddfc85e..c994ebec2360 100644
--- a/drivers/pci/pci-bridge-emul.c
+++ b/drivers/pci/pci-bridge-emul.c
@@ -139,8 +139,13 @@ struct pci_bridge_reg_behavior pci_regs_behavior[PCI_STD_HEADER_SIZEOF / 4] = {
 		.ro = GENMASK(7, 0),
 	},
 
+	/*
+	 * If expansion ROM is unsupported then ROM Base Address register must
+	 * be implemented as read-only register that return 0 when read, same
+	 * as for unused Base Address registers.
+	 */
 	[PCI_ROM_ADDRESS1 / 4] = {
-		.rw = GENMASK(31, 11) | BIT(0),
+		.ro = ~0,
 	},
 
 	/*
@@ -171,41 +176,55 @@ struct pci_bridge_reg_behavior pcie_cap_regs_behavior[PCI_CAP_PCIE_SIZEOF / 4] =
 	[PCI_CAP_LIST_ID / 4] = {
 		/*
 		 * Capability ID, Next Capability Pointer and
-		 * Capabilities register are all read-only.
+		 * bits [14:0] of Capabilities register are all read-only.
+		 * Bit 15 of Capabilities register is reserved.
 		 */
-		.ro = ~0,
+		.ro = GENMASK(30, 0),
 	},
 
 	[PCI_EXP_DEVCAP / 4] = {
-		.ro = ~0,
+		/*
+		 * Bits [31:29] and [17:16] are reserved.
+		 * Bits [27:18] are reserved for non-upstream ports.
+		 * Bits 28 and [14:6] are reserved for non-endpoint devices.
+		 * Other bits are read-only.
+		 */
+		.ro = BIT(15) | GENMASK(5, 0),
 	},
 
 	[PCI_EXP_DEVCTL / 4] = {
-		/* Device control register is RW */
-		.rw = GENMASK(15, 0),
+		/*
+		 * Device control register is RW, except bit 15 which is
+		 * reserved for non-endpoints or non-PCIe-to-PCI/X bridges.
+		 */
+		.rw = GENMASK(14, 0),
 
 		/*
 		 * Device status register has bits 6 and [3:0] W1C, [5:4] RO,
-		 * the rest is reserved
+		 * the rest is reserved. Also bit 6 is reserved for non-upstream
+		 * ports.
 		 */
-		.w1c = (BIT(6) | GENMASK(3, 0)) << 16,
+		.w1c = GENMASK(3, 0) << 16,
 		.ro = GENMASK(5, 4) << 16,
 	},
 
 	[PCI_EXP_LNKCAP / 4] = {
-		/* All bits are RO, except bit 23 which is reserved */
-		.ro = lower_32_bits(~BIT(23)),
+		/*
+		 * All bits are RO, except bit 23 which is reserved and
+		 * bit 18 which is reserved for non-upstream ports.
+		 */
+		.ro = lower_32_bits(~(BIT(23) | PCI_EXP_LNKCAP_CLKPM)),
 	},
 
 	[PCI_EXP_LNKCTL / 4] = {
 		/*
 		 * Link control has bits [15:14], [11:3] and [1:0] RW, the
-		 * rest is reserved.
+		 * rest is reserved. Bit 8 is reserved for non-upstream ports.
 		 *
 		 * Link status has bits [13:0] RO, and bits [15:14]
 		 * W1C.
 		 */
-		.rw = GENMASK(15, 14) | GENMASK(11, 3) | GENMASK(1, 0),
+		.rw = GENMASK(15, 14) | GENMASK(11, 9) | GENMASK(7, 3) | GENMASK(1, 0),
 		.ro = GENMASK(13, 0) << 16,
 		.w1c = GENMASK(15, 14) << 16,
 	},
@@ -251,6 +270,49 @@ struct pci_bridge_reg_behavior pcie_cap_regs_behavior[PCI_CAP_PCIE_SIZEOF / 4] =
 		.ro = GENMASK(15, 0) | PCI_EXP_RTSTA_PENDING,
 		.w1c = PCI_EXP_RTSTA_PME,
 	},
+
+	[PCI_EXP_DEVCAP2 / 4] = {
+		/*
+		 * Device capabilities 2 register has reserved bits [30:27].
+		 * Also bits [26:24] are reserved for non-upstream ports.
+		 */
+		.ro = BIT(31) | GENMASK(23, 0),
+	},
+
+	[PCI_EXP_DEVCTL2 / 4] = {
+		/*
+		 * Device control 2 register is RW. Bit 11 is reserved for
+		 * non-upstream ports.
+		 *
+		 * Device status 2 register is reserved.
+		 */
+		.rw = GENMASK(15, 12) | GENMASK(10, 0),
+	},
+
+	[PCI_EXP_LNKCAP2 / 4] = {
+		/* Link capabilities 2 register has reserved bits [30:25] and 0. */
+		.ro = BIT(31) | GENMASK(24, 1),
+	},
+
+	[PCI_EXP_LNKCTL2 / 4] = {
+		/*
+		 * Link control 2 register is RW.
+		 *
+		 * Link status 2 register has bits 5, 15 W1C;
+		 * bits 10, 11 reserved and others are RO.
+		 */
+		.rw = GENMASK(15, 0),
+		.w1c = (BIT(15) | BIT(5)) << 16,
+		.ro = (GENMASK(14, 12) | GENMASK(9, 6) | GENMASK(4, 0)) << 16,
+	},
+
+	[PCI_EXP_SLTCAP2 / 4] = {
+		/* Slot capabilities 2 register is reserved. */
+	},
+
+	[PCI_EXP_SLTCTL2 / 4] = {
+		/* Both Slot control 2 and Slot status 2 registers are reserved. */
+	},
 };
 
 /*
@@ -265,7 +327,11 @@ int pci_bridge_emul_init(struct pci_bridge_emul *bridge,
 {
 	BUILD_BUG_ON(sizeof(bridge->conf) != PCI_BRIDGE_CONF_END);
 
-	bridge->conf.class_revision |= cpu_to_le32(PCI_CLASS_BRIDGE_PCI << 16);
+	/*
+	 * class_revision: Class is high 24 bits and revision is low 8 bit of this member,
+	 * while class for PCI Bridge Normal Decode has the 24-bit value: PCI_CLASS_BRIDGE_PCI << 8
+	 */
+	bridge->conf.class_revision |= cpu_to_le32((PCI_CLASS_BRIDGE_PCI << 8) << 8);
 	bridge->conf.header_type = PCI_HEADER_TYPE_BRIDGE;
 	bridge->conf.cache_line_size = 0x10;
 	bridge->conf.status = cpu_to_le16(PCI_STATUS_CAP_LIST);
@@ -277,11 +343,9 @@ int pci_bridge_emul_init(struct pci_bridge_emul *bridge,
 
 	if (bridge->has_pcie) {
 		bridge->conf.capabilities_pointer = PCI_CAP_PCIE_START;
+		bridge->conf.status |= cpu_to_le16(PCI_STATUS_CAP_LIST);
 		bridge->pcie_conf.cap_id = PCI_CAP_ID_EXP;
-		/* Set PCIe v2, root port, slot support */
-		bridge->pcie_conf.cap =
-			cpu_to_le16(PCI_EXP_TYPE_ROOT_PORT << 4 | 2 |
-				    PCI_EXP_FLAGS_SLOT);
+		bridge->pcie_conf.cap |= cpu_to_le16(PCI_EXP_TYPE_ROOT_PORT << 4);
 		bridge->pcie_cap_regs_behavior =
 			kmemdup(pcie_cap_regs_behavior,
 				sizeof(pcie_cap_regs_behavior),
@@ -290,6 +354,27 @@ int pci_bridge_emul_init(struct pci_bridge_emul *bridge,
 			kfree(bridge->pci_regs_behavior);
 			return -ENOMEM;
 		}
+		/* These bits are applicable only for PCI and reserved on PCIe */
+		bridge->pci_regs_behavior[PCI_CACHE_LINE_SIZE / 4].ro &=
+			~GENMASK(15, 8);
+		bridge->pci_regs_behavior[PCI_COMMAND / 4].ro &=
+			~((PCI_COMMAND_SPECIAL | PCI_COMMAND_INVALIDATE |
+			   PCI_COMMAND_VGA_PALETTE | PCI_COMMAND_WAIT |
+			   PCI_COMMAND_FAST_BACK) |
+			  (PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK |
+			   PCI_STATUS_DEVSEL_MASK) << 16);
+		bridge->pci_regs_behavior[PCI_PRIMARY_BUS / 4].ro &=
+			~GENMASK(31, 24);
+		bridge->pci_regs_behavior[PCI_IO_BASE / 4].ro &=
+			~((PCI_STATUS_66MHZ | PCI_STATUS_FAST_BACK |
+			   PCI_STATUS_DEVSEL_MASK) << 16);
+		bridge->pci_regs_behavior[PCI_INTERRUPT_LINE / 4].rw &=
+			~((PCI_BRIDGE_CTL_MASTER_ABORT |
+			   BIT(8) | BIT(9) | BIT(11)) << 16);
+		bridge->pci_regs_behavior[PCI_INTERRUPT_LINE / 4].ro &=
+			~((PCI_BRIDGE_CTL_FAST_BACK) << 16);
+		bridge->pci_regs_behavior[PCI_INTERRUPT_LINE / 4].w1c &=
+			~(BIT(10) << 16);
 	}
 
 	if (flags & PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR) {
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f3f606c232a8..9ecce435fb3f 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1115,7 +1115,7 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
 		return -EIO;
 
 	pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
-	if (pmcsr == (u16) ~0) {
+	if (PCI_POSSIBLE_ERROR(pmcsr)) {
 		pci_err(dev, "can't change power state from %s to %s (config space inaccessible)\n",
 			pci_power_name(dev->current_state),
 			pci_power_name(state));
@@ -1271,16 +1271,16 @@ static int pci_dev_wait(struct pci_dev *dev, char *reset_type, int timeout)
 	 * After reset, the device should not silently discard config
 	 * requests, but it may still indicate that it needs more time by
 	 * responding to them with CRS completions.  The Root Port will
-	 * generally synthesize ~0 data to complete the read (except when
-	 * CRS SV is enabled and the read was for the Vendor ID; in that
-	 * case it synthesizes 0x0001 data).
+	 * generally synthesize ~0 (PCI_ERROR_RESPONSE) data to complete
+	 * the read (except when CRS SV is enabled and the read was for the
+	 * Vendor ID; in that case it synthesizes 0x0001 data).
 	 *
 	 * Wait for the device to return a non-CRS completion.  Read the
 	 * Command register instead of Vendor ID so we don't have to
 	 * contend with the CRS SV value.
 	 */
 	pci_read_config_dword(dev, PCI_COMMAND, &id);
-	while (id == ~0) {
+	while (PCI_POSSIBLE_ERROR(id)) {
 		if (delay > timeout) {
 			pci_warn(dev, "not ready %dms after %s; giving up\n",
 				 delay - 1, reset_type);
@@ -1556,7 +1556,7 @@ static void pci_save_ltr_state(struct pci_dev *dev)
 {
 	int ltr;
 	struct pci_cap_saved_state *save_state;
-	u16 *cap;
+	u32 *cap;
 
 	if (!pci_is_pcie(dev))
 		return;
@@ -1571,25 +1571,25 @@ static void pci_save_ltr_state(struct pci_dev *dev)
 		return;
 	}
 
-	cap = (u16 *)&save_state->cap.data[0];
-	pci_read_config_word(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, cap++);
-	pci_read_config_word(dev, ltr + PCI_LTR_MAX_NOSNOOP_LAT, cap++);
+	/* Some broken devices only support dword access to LTR */
+	cap = &save_state->cap.data[0];
+	pci_read_config_dword(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, cap);
 }
 
 static void pci_restore_ltr_state(struct pci_dev *dev)
 {
 	struct pci_cap_saved_state *save_state;
 	int ltr;
-	u16 *cap;
+	u32 *cap;
 
 	save_state = pci_find_saved_ext_cap(dev, PCI_EXT_CAP_ID_LTR);
 	ltr = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_LTR);
 	if (!save_state || !ltr)
 		return;
 
-	cap = (u16 *)&save_state->cap.data[0];
-	pci_write_config_word(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, *cap++);
-	pci_write_config_word(dev, ltr + PCI_LTR_MAX_NOSNOOP_LAT, *cap++);
+	/* Some broken devices only support dword access to LTR */
+	cap = &save_state->cap.data[0];
+	pci_write_config_dword(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, *cap);
 }
 
 /**
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 52c74682601a..a96b7424c9bc 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -41,11 +41,6 @@
 #define ASPM_STATE_ALL		(ASPM_STATE_L0S | ASPM_STATE_L1 |	\
 				 ASPM_STATE_L1SS)
 
-struct aspm_latency {
-	u32 l0s;			/* L0s latency (nsec) */
-	u32 l1;				/* L1 latency (nsec) */
-};
-
 struct pcie_link_state {
 	struct pci_dev *pdev;		/* Upstream component of the Link */
 	struct pci_dev *downstream;	/* Downstream component, function 0 */
@@ -65,15 +60,6 @@ struct pcie_link_state {
 	u32 clkpm_enabled:1;		/* Current Clock PM state */
 	u32 clkpm_default:1;		/* Default Clock PM state by BIOS */
 	u32 clkpm_disable:1;		/* Clock PM disabled */
-
-	/* Exit latencies */
-	struct aspm_latency latency_up;	/* Upstream direction exit latency */
-	struct aspm_latency latency_dw;	/* Downstream direction exit latency */
-	/*
-	 * Endpoint acceptable latencies. A pcie downstream port only
-	 * has one slot under it, so at most there are 8 functions.
-	 */
-	struct aspm_latency acceptable[8];
 };
 
 static int aspm_disabled, aspm_force;
@@ -105,6 +91,20 @@ static const char *policy_str[] = {
 
 #define LINK_RETRAIN_TIMEOUT HZ
 
+/*
+ * The L1 PM substate capability is only implemented in function 0 in a
+ * multi function device.
+ */
+static struct pci_dev *pci_function_0(struct pci_bus *linkbus)
+{
+	struct pci_dev *child;
+
+	list_for_each_entry(child, &linkbus->devices, bus_list)
+		if (PCI_FUNC(child->devfn) == 0)
+			return child;
+	return NULL;
+}
+
 static int policy_to_aspm_state(struct pcie_link_state *link)
 {
 	switch (aspm_policy) {
@@ -378,8 +378,10 @@ static void encode_l12_threshold(u32 threshold_us, u32 *scale, u32 *value)
 
 static void pcie_aspm_check_latency(struct pci_dev *endpoint)
 {
-	u32 latency, l1_switch_latency = 0;
-	struct aspm_latency *acceptable;
+	u32 latency, encoding, lnkcap_up, lnkcap_dw;
+	u32 l1_switch_latency = 0, latency_up_l0s;
+	u32 latency_up_l1, latency_dw_l0s, latency_dw_l1;
+	u32 acceptable_l0s, acceptable_l1;
 	struct pcie_link_state *link;
 
 	/* Device not in D0 doesn't need latency check */
@@ -388,17 +390,36 @@ static void pcie_aspm_check_latency(struct pci_dev *endpoint)
 		return;
 
 	link = endpoint->bus->self->link_state;
-	acceptable = &link->acceptable[PCI_FUNC(endpoint->devfn)];
+
+	/* Calculate endpoint L0s acceptable latency */
+	encoding = (endpoint->devcap & PCI_EXP_DEVCAP_L0S) >> 6;
+	acceptable_l0s = calc_l0s_acceptable(encoding);
+
+	/* Calculate endpoint L1 acceptable latency */
+	encoding = (endpoint->devcap & PCI_EXP_DEVCAP_L1) >> 9;
+	acceptable_l1 = calc_l1_acceptable(encoding);
 
 	while (link) {
+		struct pci_dev *dev = pci_function_0(link->pdev->subordinate);
+
+		/* Read direction exit latencies */
+		pcie_capability_read_dword(link->pdev, PCI_EXP_LNKCAP,
+					   &lnkcap_up);
+		pcie_capability_read_dword(dev, PCI_EXP_LNKCAP,
+					   &lnkcap_dw);
+		latency_up_l0s = calc_l0s_latency(lnkcap_up);
+		latency_up_l1 = calc_l1_latency(lnkcap_up);
+		latency_dw_l0s = calc_l0s_latency(lnkcap_dw);
+		latency_dw_l1 = calc_l1_latency(lnkcap_dw);
+
 		/* Check upstream direction L0s latency */
 		if ((link->aspm_capable & ASPM_STATE_L0S_UP) &&
-		    (link->latency_up.l0s > acceptable->l0s))
+		    (latency_up_l0s > acceptable_l0s))
 			link->aspm_capable &= ~ASPM_STATE_L0S_UP;
 
 		/* Check downstream direction L0s latency */
 		if ((link->aspm_capable & ASPM_STATE_L0S_DW) &&
-		    (link->latency_dw.l0s > acceptable->l0s))
+		    (latency_dw_l0s > acceptable_l0s))
 			link->aspm_capable &= ~ASPM_STATE_L0S_DW;
 		/*
 		 * Check L1 latency.
@@ -413,9 +434,9 @@ static void pcie_aspm_check_latency(struct pci_dev *endpoint)
 		 * L1 exit latencies advertised by a device include L1
 		 * substate latencies (and hence do not do any check).
 		 */
-		latency = max_t(u32, link->latency_up.l1, link->latency_dw.l1);
+		latency = max_t(u32, latency_up_l1, latency_dw_l1);
 		if ((link->aspm_capable & ASPM_STATE_L1) &&
-		    (latency + l1_switch_latency > acceptable->l1))
+		    (latency + l1_switch_latency > acceptable_l1))
 			link->aspm_capable &= ~ASPM_STATE_L1;
 		l1_switch_latency += 1000;
 
@@ -423,20 +444,6 @@ static void pcie_aspm_check_latency(struct pci_dev *endpoint)
 	}
 }
 
-/*
- * The L1 PM substate capability is only implemented in function 0 in a
- * multi function device.
- */
-static struct pci_dev *pci_function_0(struct pci_bus *linkbus)
-{
-	struct pci_dev *child;
-
-	list_for_each_entry(child, &linkbus->devices, bus_list)
-		if (PCI_FUNC(child->devfn) == 0)
-			return child;
-	return NULL;
-}
-
 static void pci_clear_and_set_dword(struct pci_dev *pdev, int pos,
 				    u32 clear, u32 set)
 {
@@ -496,6 +503,7 @@ static void aspm_calc_l1ss_info(struct pcie_link_state *link,
 	encode_l12_threshold(l1_2_threshold, &scale, &value);
 	ctl1 |= t_common_mode << 8 | scale << 29 | value << 16;
 
+	/* Some broken devices only support dword access to L1 SS */
 	pci_read_config_dword(parent, parent->l1ss + PCI_L1SS_CTL1, &pctl1);
 	pci_read_config_dword(parent, parent->l1ss + PCI_L1SS_CTL2, &pctl2);
 	pci_read_config_dword(child, child->l1ss + PCI_L1SS_CTL1, &cctl1);
@@ -593,8 +601,6 @@ static void pcie_aspm_cap_init(struct pcie_link_state *link, int blacklist)
 		link->aspm_enabled |= ASPM_STATE_L0S_UP;
 	if (parent_lnkctl & PCI_EXP_LNKCTL_ASPM_L0S)
 		link->aspm_enabled |= ASPM_STATE_L0S_DW;
-	link->latency_up.l0s = calc_l0s_latency(parent_lnkcap);
-	link->latency_dw.l0s = calc_l0s_latency(child_lnkcap);
 
 	/* Setup L1 state */
 	if (parent_lnkcap & child_lnkcap & PCI_EXP_LNKCAP_ASPM_L1)
@@ -602,8 +608,6 @@ static void pcie_aspm_cap_init(struct pcie_link_state *link, int blacklist)
 
 	if (parent_lnkctl & child_lnkctl & PCI_EXP_LNKCTL_ASPM_L1)
 		link->aspm_enabled |= ASPM_STATE_L1;
-	link->latency_up.l1 = calc_l1_latency(parent_lnkcap);
-	link->latency_dw.l1 = calc_l1_latency(child_lnkcap);
 
 	/* Setup L1 substate */
 	pci_read_config_dword(parent, parent->l1ss + PCI_L1SS_CAP,
@@ -660,22 +664,10 @@ static void pcie_aspm_cap_init(struct pcie_link_state *link, int blacklist)
 
 	/* Get and check endpoint acceptable latencies */
 	list_for_each_entry(child, &linkbus->devices, bus_list) {
-		u32 reg32, encoding;
-		struct aspm_latency *acceptable =
-			&link->acceptable[PCI_FUNC(child->devfn)];
-
 		if (pci_pcie_type(child) != PCI_EXP_TYPE_ENDPOINT &&
 		    pci_pcie_type(child) != PCI_EXP_TYPE_LEG_END)
 			continue;
 
-		pcie_capability_read_dword(child, PCI_EXP_DEVCAP, &reg32);
-		/* Calculate endpoint L0s acceptable latency */
-		encoding = (reg32 & PCI_EXP_DEVCAP_L0S) >> 6;
-		acceptable->l0s = calc_l0s_acceptable(encoding);
-		/* Calculate endpoint L1 acceptable latency */
-		encoding = (reg32 & PCI_EXP_DEVCAP_L1) >> 9;
-		acceptable->l1 = calc_l1_acceptable(encoding);
-
 		pcie_aspm_check_latency(child);
 	}
 }
diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index c556e7beafe3..3e9afee02e8d 100644
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -79,7 +79,7 @@ static bool dpc_completed(struct pci_dev *pdev)
 	u16 status;
 
 	pci_read_config_word(pdev, pdev->dpc_cap + PCI_EXP_DPC_STATUS, &status);
-	if ((status != 0xffff) && (status & PCI_EXP_DPC_STATUS_TRIGGER))
+	if ((!PCI_POSSIBLE_ERROR(status)) && (status & PCI_EXP_DPC_STATUS_TRIGGER))
 		return false;
 
 	if (test_bit(PCI_DPC_RECOVERING, &pdev->priv_flags))
@@ -312,7 +312,7 @@ static irqreturn_t dpc_irq(int irq, void *context)
 
 	pci_read_config_word(pdev, cap + PCI_EXP_DPC_STATUS, &status);
 
-	if (!(status & PCI_EXP_DPC_STATUS_INTERRUPT) || status == (u16)(~0))
+	if (!(status & PCI_EXP_DPC_STATUS_INTERRUPT) || PCI_POSSIBLE_ERROR(status))
 		return IRQ_NONE;
 
 	pci_write_config_word(pdev, cap + PCI_EXP_DPC_STATUS,
diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c
index 1d0dd77fed3a..ef8ce436ead9 100644
--- a/drivers/pci/pcie/pme.c
+++ b/drivers/pci/pcie/pme.c
@@ -224,7 +224,7 @@ static void pcie_pme_work_fn(struct work_struct *work)
 			break;
 
 		pcie_capability_read_dword(port, PCI_EXP_RTSTA, &rtsta);
-		if (rtsta == (u32) ~0)
+		if (PCI_POSSIBLE_ERROR(rtsta))
 			break;
 
 		if (rtsta & PCI_EXP_RTSTA_PME) {
@@ -274,7 +274,7 @@ static irqreturn_t pcie_pme_irq(int irq, void *context)
 	spin_lock_irqsave(&data->lock, flags);
 	pcie_capability_read_dword(port, PCI_EXP_RTSTA, &rtsta);
 
-	if (rtsta == (u32) ~0 || !(rtsta & PCI_EXP_RTSTA_PME)) {
+	if (PCI_POSSIBLE_ERROR(rtsta) || !(rtsta & PCI_EXP_RTSTA_PME)) {
 		spin_unlock_irqrestore(&data->lock, flags);
 		return IRQ_NONE;
 	}
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 443efb00e219..17a969942d37 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -206,14 +206,14 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
 	 * memory BAR or a ROM, bit 0 must be clear; if it's an io BAR, bit
 	 * 1 must be clear.
 	 */
-	if (sz == 0xffffffff)
+	if (PCI_POSSIBLE_ERROR(sz))
 		sz = 0;
 
 	/*
 	 * I don't know how l can have all bits set.  Copied from old code.
 	 * Maybe it fixes a bug on some ancient platform.
 	 */
-	if (l == 0xffffffff)
+	if (PCI_POSSIBLE_ERROR(l))
 		l = 0;
 
 	if (type == pci_bar_unknown) {
@@ -898,8 +898,6 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge)
 
 	bridge->bus = bus;
 
-	/* Temporarily move resources off the list */
-	list_splice_init(&bridge->windows, &resources);
 	bus->sysdata = bridge->sysdata;
 	bus->ops = bridge->ops;
 	bus->number = bus->busn_res.start = bridge->busnr;
@@ -925,6 +923,8 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge)
 	if (err)
 		goto free;
 
+	/* Temporarily move resources off the list */
+	list_splice_init(&bridge->windows, &resources);
 	err = device_add(&bridge->dev);
 	if (err) {
 		put_device(&bridge->dev);
@@ -1579,20 +1579,12 @@ void set_pcie_hotplug_bridge(struct pci_dev *pdev)
 
 static void set_pcie_thunderbolt(struct pci_dev *dev)
 {
-	int vsec = 0;
-	u32 header;
+	u16 vsec;
 
-	while ((vsec = pci_find_next_ext_capability(dev, vsec,
-						    PCI_EXT_CAP_ID_VNDR))) {
-		pci_read_config_dword(dev, vsec + PCI_VNDR_HEADER, &header);
-
-		/* Is the device part of a Thunderbolt controller? */
-		if (dev->vendor == PCI_VENDOR_ID_INTEL &&
-		    PCI_VNDR_HEADER_ID(header) == PCI_VSEC_ID_INTEL_TBT) {
-			dev->is_thunderbolt = 1;
-			return;
-		}
-	}
+	/* Is the device part of a Thunderbolt controller? */
+	vsec = pci_find_vsec_capability(dev, PCI_VENDOR_ID_INTEL, PCI_VSEC_ID_INTEL_TBT);
+	if (vsec)
+		dev->is_thunderbolt = 1;
 }
 
 static void set_pcie_untrusted(struct pci_dev *dev)
@@ -1683,7 +1675,7 @@ static int pci_cfg_space_size_ext(struct pci_dev *dev)
 
 	if (pci_read_config_dword(dev, pos, &status) != PCIBIOS_SUCCESSFUL)
 		return PCI_CFG_SPACE_SIZE;
-	if (status == 0xffffffff || pci_ext_cfg_is_aliased(dev))
+	if (PCI_POSSIBLE_ERROR(status) || pci_ext_cfg_is_aliased(dev))
 		return PCI_CFG_SPACE_SIZE;
 
 	return PCI_CFG_SPACE_EXP_SIZE;
@@ -2373,8 +2365,8 @@ bool pci_bus_generic_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l,
 	if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, l))
 		return false;
 
-	/* Some broken boards return 0 or ~0 if a slot is empty: */
-	if (*l == 0xffffffff || *l == 0x00000000 ||
+	/* Some broken boards return 0 or ~0 (PCI_ERROR_RESPONSE) if a slot is empty: */
+	if (PCI_POSSIBLE_ERROR(*l) || *l == 0x00000000 ||
 	    *l == 0x0000ffff || *l == 0xffff0000)
 		return false;
 
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index b4cb658cce2b..d2dd6a6cda60 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -980,8 +980,8 @@ static void quirk_via_ioapic(struct pci_dev *dev)
 	else
 		tmp = 0x1f; /* all known bits (4-0) routed to external APIC */
 
-	pci_info(dev, "%sbling VIA external APIC routing\n",
-	       tmp == 0 ? "Disa" : "Ena");
+	pci_info(dev, "%s VIA external APIC routing\n",
+		 tmp ? "Enabling" : "Disabling");
 
 	/* Offset 0x58: External APIC IRQ output control */
 	pci_write_config_byte(dev, 0x58, tmp);
@@ -4103,6 +4103,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
 			 quirk_dma_func1_alias);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
 			 quirk_dma_func1_alias);
+/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
+			 quirk_dma_func1_alias);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
 			 quirk_dma_func1_alias);
 /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
@@ -5683,6 +5686,15 @@ SWITCHTEC_QUIRK(0x4268);  /* PAX 68XG4  */
 SWITCHTEC_QUIRK(0x4252);  /* PAX 52XG4  */
 SWITCHTEC_QUIRK(0x4236);  /* PAX 36XG4  */
 SWITCHTEC_QUIRK(0x4228);  /* PAX 28XG4  */
+SWITCHTEC_QUIRK(0x4352);  /* PFXA 52XG4 */
+SWITCHTEC_QUIRK(0x4336);  /* PFXA 36XG4 */
+SWITCHTEC_QUIRK(0x4328);  /* PFXA 28XG4 */
+SWITCHTEC_QUIRK(0x4452);  /* PSXA 52XG4 */
+SWITCHTEC_QUIRK(0x4436);  /* PSXA 36XG4 */
+SWITCHTEC_QUIRK(0x4428);  /* PSXA 28XG4 */
+SWITCHTEC_QUIRK(0x4552);  /* PAXA 52XG4 */
+SWITCHTEC_QUIRK(0x4536);  /* PAXA 36XG4 */
+SWITCHTEC_QUIRK(0x4528);  /* PAXA 28XG4 */
 
 /*
  * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints.
@@ -5857,3 +5869,13 @@ static void nvidia_ion_ahci_fixup(struct pci_dev *pdev)
 	pdev->dev_flags |= PCI_DEV_FLAGS_HAS_MSI_MASKING;
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0ab8, nvidia_ion_ahci_fixup);
+
+static void rom_bar_overlap_defect(struct pci_dev *dev)
+{
+	pci_info(dev, "working around ROM BAR overlap defect\n");
+	dev->rom_bar_overlap = 1;
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1533, rom_bar_overlap_defect);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1536, rom_bar_overlap_defect);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1537, rom_bar_overlap_defect);
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1538, rom_bar_overlap_defect);
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 7f1acb3918d0..439ac5f5907a 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -75,12 +75,16 @@ static void pci_std_update_resource(struct pci_dev *dev, int resno)
 		 * as zero when disabled, so don't update ROM BARs unless
 		 * they're enabled.  See
 		 * https://lore.kernel.org/r/43147B3D.1030309@vc.cvut.cz/
+		 * But we must update ROM BAR for buggy devices where even a
+		 * disabled ROM can conflict with other BARs.
 		 */
-		if (!(res->flags & IORESOURCE_ROM_ENABLE))
+		if (!(res->flags & IORESOURCE_ROM_ENABLE) &&
+		    !dev->rom_bar_overlap)
 			return;
 
 		reg = dev->rom_base_reg;
-		new |= PCI_ROM_ADDRESS_ENABLE;
+		if (res->flags & IORESOURCE_ROM_ENABLE)
+			new |= PCI_ROM_ADDRESS_ENABLE;
 	} else
 		return;
 
diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index 751a26668e3a..a0c67191a8b9 100644
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -96,11 +96,12 @@ static struct attribute *pci_slot_default_attrs[] = {
 	&pci_slot_attr_cur_speed.attr,
 	NULL,
 };
+ATTRIBUTE_GROUPS(pci_slot_default);
 
 static struct kobj_type pci_slot_ktype = {
 	.sysfs_ops = &pci_slot_sysfs_ops,
 	.release = &pci_slot_release,
-	.default_attrs = pci_slot_default_attrs,
+	.default_groups = pci_slot_default_groups,
 };
 
 static char *make_slot_name(const char *name)
diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 38c2b036fb8e..c36c1238c604 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -122,7 +122,7 @@ static void stuser_set_state(struct switchtec_user *stuser,
 {
 	/* requires the mrpc_mutex to already be held when called */
 
-	const char * const state_names[] = {
+	static const char * const state_names[] = {
 		[MRPC_IDLE] = "IDLE",
 		[MRPC_QUEUED] = "QUEUED",
 		[MRPC_RUNNING] = "RUNNING",
@@ -1779,6 +1779,15 @@ static const struct pci_device_id switchtec_pci_tbl[] = {
 	SWITCHTEC_PCI_DEVICE(0x4252, SWITCHTEC_GEN4),  //PAX 52XG4
 	SWITCHTEC_PCI_DEVICE(0x4236, SWITCHTEC_GEN4),  //PAX 36XG4
 	SWITCHTEC_PCI_DEVICE(0x4228, SWITCHTEC_GEN4),  //PAX 28XG4
+	SWITCHTEC_PCI_DEVICE(0x4352, SWITCHTEC_GEN4),  //PFXA 52XG4
+	SWITCHTEC_PCI_DEVICE(0x4336, SWITCHTEC_GEN4),  //PFXA 36XG4
+	SWITCHTEC_PCI_DEVICE(0x4328, SWITCHTEC_GEN4),  //PFXA 28XG4
+	SWITCHTEC_PCI_DEVICE(0x4452, SWITCHTEC_GEN4),  //PSXA 52XG4
+	SWITCHTEC_PCI_DEVICE(0x4436, SWITCHTEC_GEN4),  //PSXA 36XG4
+	SWITCHTEC_PCI_DEVICE(0x4428, SWITCHTEC_GEN4),  //PSXA 28XG4
+	SWITCHTEC_PCI_DEVICE(0x4552, SWITCHTEC_GEN4),  //PAXA 52XG4
+	SWITCHTEC_PCI_DEVICE(0x4536, SWITCHTEC_GEN4),  //PAXA 36XG4
+	SWITCHTEC_PCI_DEVICE(0x4528, SWITCHTEC_GEN4),  //PAXA 28XG4
 	{0}
 };
 MODULE_DEVICE_TABLE(pci, switchtec_pci_tbl);
diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 6b1edfc890a3..92df2c2c5d07 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -20,6 +20,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_gpio.h>
+#include <linux/pci.h>
 #include <linux/regmap.h>
 
 #include <pcmcia/ss.h>
@@ -230,6 +231,7 @@ static int at91_cf_probe(struct platform_device *pdev)
 	struct at91_cf_socket	*cf;
 	struct at91_cf_data	*board;
 	struct resource		*io;
+	struct resource		realio;
 	int			status;
 
 	board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
@@ -307,7 +309,9 @@ static int at91_cf_probe(struct platform_device *pdev)
 	 * io_offset is set to 0x10000 to avoid the check in static_find_io().
 	 * */
 	cf->socket.io_offset = 0x10000;
-	status = pci_ioremap_io(0x10000, cf->phys_baseaddr + CF_IO_PHYS);
+	realio.start = cf->socket.io_offset;
+	realio.end = realio.start + SZ_64K - 1;
+	status = pci_remap_iospace(&realio, cf->phys_baseaddr + CF_IO_PHYS);
 	if (status)
 		goto fail0a;