Merge tag 'pci-v3.16-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull more PCI updates from Bjorn Helgaas:
 "Here are some more things I'd like to see in v3.16-rc1:

   - DMA alias iterator, part of some work to fix IOMMU issues
   - MVEBU, Tegra, DesignWare changes that I forgot to include before
   - Some whitespace code cleanup

  Details:

  IOMMU
    - Add DMA alias iterator (Alex Williamson)
    - Add DMA alias quirks for ASMedia, ITE, Tundra bridges (Alex Williamson)
    - Add DMA alias quirks for Marvell, Ricoh devices (Alex Williamson)
    - Add DMA alias quirk for HighPoint devices (Jérôme Carretero)

  MSI
    - Fix leak in free_msi_irqs() (Alexei Starovoitov)

  Marvell MVEBU
    - Remove unnecessary use of 'conf_lock' spinlock (Andrew Murray)
    - Avoid setting an undefined window size (Jason Gunthorpe)
    - Allow several windows with the same target/attribute (Thomas Petazzoni)
    - Split PCIe BARs into multiple MBus windows when needed (Thomas Petazzoni)
    - Fix off-by-one in the computed size of the mbus windows (Willy Tarreau)

  NVIDIA Tegra
    - Use new OF interrupt mapping when possible (Lucas Stach)

  Synopsys DesignWare
    - Remove unnecessary use of 'conf_lock' spinlock (Andrew Murray)
    - Use new OF interrupt mapping when possible (Lucas Stach)
    - Split Exynos and i.MX bindings (Lucas Stach)
    - Fix comment for setting number of lanes (Mohit Kumar)
    - Fix iATU programming for cfg1, io and mem viewport (Mohit Kumar)

  Miscellaneous
    - EXPORT_SYMBOL cleanup (Ryan Desfosses)
    - Whitespace cleanup (Ryan Desfosses)
    - Merge multi-line quoted strings (Ryan Desfosses)"

* tag 'pci-v3.16-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (21 commits)
  PCI: Add function 1 DMA alias quirk for HighPoint RocketRaid 642L
  PCI/MSI: Fix memory leak in free_msi_irqs()
  PCI: Merge multi-line quoted strings
  PCI: Whitespace cleanup
  PCI: Move EXPORT_SYMBOL so it immediately follows function/variable
  PCI: Add bridge DMA alias quirk for ITE bridge
  PCI: designware: Split Exynos and i.MX bindings
  PCI: Add bridge DMA alias quirk for ASMedia and Tundra bridges
  PCI: Add support for PCIe-to-PCI bridge DMA alias quirks
  PCI: Add function 1 DMA alias quirk for Marvell devices
  PCI: Add function 0 DMA alias quirk for Ricoh devices
  PCI: Add support for DMA alias quirks
  PCI: Convert pci_dev_flags definitions to bit shifts
  PCI: Add DMA alias iterator
  PCI: mvebu: Use '%pa' for printing 'phys_addr_t' type
  PCI: mvebu: Remove unnecessary use of 'conf_lock' spinlock
  PCI: designware: Remove unnecessary use of 'conf_lock' spinlock
  PCI: designware: Use new OF interrupt mapping when possible
  PCI: designware: Fix iATU programming for cfg1, io and mem viewport
  PCI: designware: Fix comment for setting number of lanes
  ...

1 files changed, 13 insertions, 18 deletions

diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index e384e2534594..ce23e0f076b6 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -113,7 +113,6 @@ struct mvebu_pcie {
 struct mvebu_pcie_port {
 	char *name;
 	void __iomem *base;
-	spinlock_t conf_lock;
 	u32 port;
 	u32 lane;
 	int devfn;
@@ -329,9 +328,11 @@ static void mvebu_pcie_add_windows(struct mvebu_pcie_port *port,
 		ret = mvebu_mbus_add_window_remap_by_id(target, attribute, base,
 							sz, remap);
 		if (ret) {
+			phys_addr_t end = base + sz - 1;
+
 			dev_err(&port->pcie->pdev->dev,
-				"Could not create MBus window at 0x%x, size 0x%x: %d\n",
-				base, sz, ret);
+				"Could not create MBus window at [mem %pa-%pa]: %d\n",
+				&base, &end, ret);
 			mvebu_pcie_del_windows(port, base - size_mapped,
 					       size_mapped);
 			return;
@@ -613,9 +614,9 @@ static inline struct mvebu_pcie *sys_to_pcie(struct pci_sys_data *sys)
 	return sys->private_data;
 }
 
-static struct mvebu_pcie_port *
-mvebu_pcie_find_port(struct mvebu_pcie *pcie, struct pci_bus *bus,
-		     int devfn)
+static struct mvebu_pcie_port *mvebu_pcie_find_port(struct mvebu_pcie *pcie,
+						    struct pci_bus *bus,
+						    int devfn)
 {
 	int i;
 
@@ -638,7 +639,6 @@ static int mvebu_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
 {
 	struct mvebu_pcie *pcie = sys_to_pcie(bus->sysdata);
 	struct mvebu_pcie_port *port;
-	unsigned long flags;
 	int ret;
 
 	port = mvebu_pcie_find_port(pcie, bus, devfn);
@@ -664,10 +664,8 @@ static int mvebu_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	/* Access the real PCIe interface */
-	spin_lock_irqsave(&port->conf_lock, flags);
 	ret = mvebu_pcie_hw_wr_conf(port, bus, devfn,
 				    where, size, val);
-	spin_unlock_irqrestore(&port->conf_lock, flags);
 
 	return ret;
 }
@@ -678,7 +676,6 @@ static int mvebu_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
 {
 	struct mvebu_pcie *pcie = sys_to_pcie(bus->sysdata);
 	struct mvebu_pcie_port *port;
-	unsigned long flags;
 	int ret;
 
 	port = mvebu_pcie_find_port(pcie, bus, devfn);
@@ -710,10 +707,8 @@ static int mvebu_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
 	}
 
 	/* Access the real PCIe interface */
-	spin_lock_irqsave(&port->conf_lock, flags);
 	ret = mvebu_pcie_hw_rd_conf(port, bus, devfn,
 				    where, size, val);
-	spin_unlock_irqrestore(&port->conf_lock, flags);
 
 	return ret;
 }
@@ -786,10 +781,10 @@ static void mvebu_pcie_add_bus(struct pci_bus *bus)
 }
 
 static resource_size_t mvebu_pcie_align_resource(struct pci_dev *dev,
-						const struct resource *res,
-						resource_size_t start,
-						resource_size_t size,
-						resource_size_t align)
+						 const struct resource *res,
+						 resource_size_t start,
+						 resource_size_t size,
+						 resource_size_t align)
 {
 	if (dev->bus->number != 0)
 		return start;
@@ -839,7 +834,8 @@ static void mvebu_pcie_enable(struct mvebu_pcie *pcie)
  * found, maps it.
  */
 static void __iomem *mvebu_pcie_map_registers(struct platform_device *pdev,
-		      struct device_node *np, struct mvebu_pcie_port *port)
+					      struct device_node *np,
+					      struct mvebu_pcie_port *port)
 {
 	struct resource regs;
 	int ret = 0;
@@ -1060,7 +1056,6 @@ static int mvebu_pcie_probe(struct platform_device *pdev)
 		mvebu_pcie_set_local_dev_nr(port, 1);
 
 		port->dn = child;
-		spin_lock_init(&port->conf_lock);
 		mvebu_sw_pci_bridge_init(port);
 		i++;
 	}