diff options
author | Bjorn Helgaas <bhelgaas@google.com> | 2021-11-05 19:28:47 +0300 |
---|---|---|
committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-11-05 19:28:47 +0300 |
commit | 78be29ab548f050fb61065f94f8c129a6cdde5c2 (patch) | |
tree | 929372598849d67664a674615a8c8f7f710c18a7 /drivers/pci | |
parent | 10d0f97f78bab4fe72c1a4bb57010a4cc5d430a9 (diff) | |
parent | ca25c63779ca966ff3dd4ea20af1401452dbbe75 (diff) | |
download | linux-78be29ab548f050fb61065f94f8c129a6cdde5c2.tar.xz |
Merge branch 'pci/misc'
- Tidy setup-irq.c comments (Pranay Sanghai)
- Fix misspellings (Krzysztof Wilczyński)
- Fix sprintf(), sscanf() format mismatches (Krzysztof Wilczyński)
- Tidy cpqphp code formatting (Krzysztof Wilczyński)
- Remove unused pci_pool wrappers, which have been replaced by dma_pool
(Cai Huoqing)
- Remove a redundant initialization in __pci_reset_function_locked() (Colin
Ian King)
- Use 'unsigned int' instead of 'unsigned' (Krzysztof Wilczyński)
- Update PCI subsystem information in MAINTAINERS (Krzysztof Wilczyński)
- Include generic <linux/> headers instead of <asm/> for cpqphp and vmd
(Krzysztof Wilczyński)
* pci/misc:
PCI: vmd: Drop redundant includes of <asm/device.h>, <asm/msi.h>
PCI: cpqphp: Use <linux/io.h> instead of <asm/io.h>
MAINTAINERS: Update PCI subsystem information
PCI: Prefer 'unsigned int' over bare 'unsigned'
PCI: Remove redundant 'rc' initialization
PCI: Remove unused pci_pool wrappers
PCI: cpqphp: Format if-statement code block correctly
PCI: Use unsigned to match sscanf("%x") in pci_dev_str_match_path()
PCI: hv: Remove unnecessary use of %hx
PCI: Correct misspelled and remove duplicated words
PCI: Tidy comments
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/controller/pci-hyperv.c | 4 | ||||
-rw-r--r-- | drivers/pci/controller/pci-thunder-ecam.c | 4 | ||||
-rw-r--r-- | drivers/pci/controller/pci-xgene-msi.c | 2 | ||||
-rw-r--r-- | drivers/pci/controller/pcie-brcmstb.c | 2 | ||||
-rw-r--r-- | drivers/pci/controller/pcie-iproc.c | 2 | ||||
-rw-r--r-- | drivers/pci/controller/vmd.c | 2 | ||||
-rw-r--r-- | drivers/pci/endpoint/pci-epc-core.c | 2 | ||||
-rw-r--r-- | drivers/pci/endpoint/pci-epf-core.c | 4 | ||||
-rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 2 | ||||
-rw-r--r-- | drivers/pci/hotplug/cpqphp.h | 2 | ||||
-rw-r--r-- | drivers/pci/hotplug/cpqphp_ctrl.c | 4 | ||||
-rw-r--r-- | drivers/pci/hotplug/cpqphp_pci.c | 6 | ||||
-rw-r--r-- | drivers/pci/hotplug/ibmphp.h | 4 | ||||
-rw-r--r-- | drivers/pci/hotplug/shpchp_hpc.c | 2 | ||||
-rw-r--r-- | drivers/pci/msi.c | 3 | ||||
-rw-r--r-- | drivers/pci/pci-driver.c | 2 | ||||
-rw-r--r-- | drivers/pci/pci.c | 9 | ||||
-rw-r--r-- | drivers/pci/pcie/aer.c | 2 | ||||
-rw-r--r-- | drivers/pci/probe.c | 7 | ||||
-rw-r--r-- | drivers/pci/quirks.c | 14 | ||||
-rw-r--r-- | drivers/pci/rom.c | 2 | ||||
-rw-r--r-- | drivers/pci/setup-bus.c | 2 | ||||
-rw-r--r-- | drivers/pci/setup-irq.c | 26 |
23 files changed, 57 insertions, 52 deletions
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index eaec915ffe62..8459f857ad9e 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -3126,14 +3126,14 @@ static int hv_pci_probe(struct hv_device *hdev, if (dom == HVPCI_DOM_INVALID) { dev_err(&hdev->device, - "Unable to use dom# 0x%hx or other numbers", dom_req); + "Unable to use dom# 0x%x or other numbers", dom_req); ret = -EINVAL; goto free_bus; } if (dom != dom_req) dev_info(&hdev->device, - "PCI dom# 0x%hx has collision, using 0x%hx", + "PCI dom# 0x%x has collision, using 0x%x", dom_req, dom); hbus->bridge->domain_nr = dom; diff --git a/drivers/pci/controller/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c index ffd84656544f..e9d5ca245f5e 100644 --- a/drivers/pci/controller/pci-thunder-ecam.c +++ b/drivers/pci/controller/pci-thunder-ecam.c @@ -17,7 +17,7 @@ static void set_val(u32 v, int where, int size, u32 *val) { int shift = (where & 3) * 8; - pr_debug("set_val %04x: %08x\n", (unsigned)(where & ~3), v); + pr_debug("set_val %04x: %08x\n", (unsigned int)(where & ~3), v); v >>= shift; if (size == 1) v &= 0xff; @@ -187,7 +187,7 @@ static int thunder_ecam_config_read(struct pci_bus *bus, unsigned int devfn, pr_debug("%04x:%04x - Fix pass#: %08x, where: %03x, devfn: %03x\n", vendor_device & 0xffff, vendor_device >> 16, class_rev, - (unsigned) where, devfn); + (unsigned int)where, devfn); /* Check for non type-00 header */ if (cfg_type == 0) { diff --git a/drivers/pci/controller/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c index b7a8e062fcc5..c50ff279903c 100644 --- a/drivers/pci/controller/pci-xgene-msi.c +++ b/drivers/pci/controller/pci-xgene-msi.c @@ -302,7 +302,7 @@ static void xgene_msi_isr(struct irq_desc *desc) /* * MSIINTn (n is 0..F) indicates if there is a pending MSI interrupt - * If bit x of this register is set (x is 0..7), one or more interupts + * If bit x of this register is set (x is 0..7), one or more interrupts * corresponding to MSInIRx is set. */ grp_select = xgene_msi_int_read(xgene_msi, msi_grp); diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index cc30215f5a43..1fc7bd49a7ad 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -145,7 +145,7 @@ #define BRCM_INT_PCI_MSI_LEGACY_NR 8 #define BRCM_INT_PCI_MSI_SHIFT 0 -/* MSI target adresses */ +/* MSI target addresses */ #define BRCM_MSI_TARGET_ADDR_LT_4GB 0x0fffffffcULL #define BRCM_MSI_TARGET_ADDR_GT_4GB 0xffffffffcULL diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c index 30ac5fbefbbf..36b9d2c46cfa 100644 --- a/drivers/pci/controller/pcie-iproc.c +++ b/drivers/pci/controller/pcie-iproc.c @@ -249,7 +249,7 @@ enum iproc_pcie_reg { /* * To hold the address of the register where the MSI writes are - * programed. When ARM GICv3 ITS is used, this should be programmed + * programmed. When ARM GICv3 ITS is used, this should be programmed * with the address of the GITS_TRANSLATER register. */ IPROC_PCIE_MSI_ADDR_LO, diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c index a5987e52700e..1ed2667069ab 100644 --- a/drivers/pci/controller/vmd.c +++ b/drivers/pci/controller/vmd.c @@ -18,8 +18,6 @@ #include <linux/rcupdate.h> #include <asm/irqdomain.h> -#include <asm/device.h> -#include <asm/msi.h> #define VMD_CFGBAR 0 #define VMD_MEMBAR1 2 diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c index ecbb0fb3b653..38621558d397 100644 --- a/drivers/pci/endpoint/pci-epc-core.c +++ b/drivers/pci/endpoint/pci-epc-core.c @@ -700,7 +700,7 @@ EXPORT_SYMBOL_GPL(pci_epc_linkup); /** * pci_epc_init_notify() - Notify the EPF device that EPC device's core * initialization is completed. - * @epc: the EPC device whose core initialization is completeds + * @epc: the EPC device whose core initialization is completed * * Invoke to Notify the EPF device that the EPC device's initialization * is completed. diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c index 8aea16380870..9ed556936f48 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -224,7 +224,7 @@ EXPORT_SYMBOL_GPL(pci_epf_add_vepf); * be removed * @epf_vf: the virtual EP function to be removed * - * Invoke to remove a virtual endpoint function from the physcial endpoint + * Invoke to remove a virtual endpoint function from the physical endpoint * function. */ void pci_epf_remove_vepf(struct pci_epf *epf_pf, struct pci_epf *epf_vf) @@ -432,7 +432,7 @@ EXPORT_SYMBOL_GPL(pci_epf_destroy); /** * pci_epf_create() - create a new PCI EPF device * @name: the name of the PCI EPF device. This name will be used to bind the - * the EPF device to a EPF driver + * EPF device to a EPF driver * * Invoke to create a new PCI EPF device by providing the name of the function * device. diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index f031302ad401..12f4b351be67 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -22,7 +22,7 @@ * when the bridge is scanned and it loses a refcount when the bridge * is removed. * - When a P2P bridge is present, we elevate the refcount on the subordinate - * bus. It loses the refcount when the the driver unloads. + * bus. It loses the refcount when the driver unloads. */ #define pr_fmt(fmt) "acpiphp_glue: " fmt diff --git a/drivers/pci/hotplug/cpqphp.h b/drivers/pci/hotplug/cpqphp.h index 77e4e0142fbc..2f7b49ea96e2 100644 --- a/drivers/pci/hotplug/cpqphp.h +++ b/drivers/pci/hotplug/cpqphp.h @@ -15,7 +15,7 @@ #define _CPQPHP_H #include <linux/interrupt.h> -#include <asm/io.h> /* for read? and write? functions */ +#include <linux/io.h> /* for read? and write? functions */ #include <linux/delay.h> /* for delays */ #include <linux/mutex.h> #include <linux/sched/signal.h> /* for signal_pending() */ diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c index 1b26ca0b3701..ed7b58eb64d2 100644 --- a/drivers/pci/hotplug/cpqphp_ctrl.c +++ b/drivers/pci/hotplug/cpqphp_ctrl.c @@ -519,7 +519,7 @@ error: * @head: list to search * @size: size of node to find, must be a power of two. * - * Description: This function sorts the resource list by size and then returns + * Description: This function sorts the resource list by size and then * returns the first node of "size" length that is not in the ISA aliasing * window. If it finds a node larger than "size" it will split it up. */ @@ -1202,7 +1202,7 @@ static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_ mdelay(5); - /* Reenable interrupts */ + /* Re-enable interrupts */ writel(0, ctrl->hpc_reg + INT_MASK); pci_write_config_byte(ctrl->pci_dev, 0x41, reg); diff --git a/drivers/pci/hotplug/cpqphp_pci.c b/drivers/pci/hotplug/cpqphp_pci.c index 1b2b3f3b648b..9038039ad6db 100644 --- a/drivers/pci/hotplug/cpqphp_pci.c +++ b/drivers/pci/hotplug/cpqphp_pci.c @@ -189,8 +189,10 @@ int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num) /* This should only be for x86 as it sets the Edge Level * Control Register */ - outb((u8) (temp_word & 0xFF), 0x4d0); outb((u8) ((temp_word & - 0xFF00) >> 8), 0x4d1); rc = 0; } + outb((u8)(temp_word & 0xFF), 0x4d0); + outb((u8)((temp_word & 0xFF00) >> 8), 0x4d1); + rc = 0; + } return rc; } diff --git a/drivers/pci/hotplug/ibmphp.h b/drivers/pci/hotplug/ibmphp.h index e90a4ebf6550..0399c60d2ec1 100644 --- a/drivers/pci/hotplug/ibmphp.h +++ b/drivers/pci/hotplug/ibmphp.h @@ -352,7 +352,7 @@ struct resource_node { u32 len; int type; /* MEM, IO, PFMEM */ u8 fromMem; /* this is to indicate that the range is from - * from the Memory bucket rather than from PFMem */ + * the Memory bucket rather than from PFMem */ struct resource_node *next; struct resource_node *nextRange; /* for the other mem range on bus */ }; @@ -736,7 +736,7 @@ struct controller { int ibmphp_init_devno(struct slot **); /* This function is called from EBDA, so we need it not be static */ int ibmphp_do_disable_slot(struct slot *slot_cur); -int ibmphp_update_slot_info(struct slot *); /* This function is called from HPC, so we need it to not be be static */ +int ibmphp_update_slot_info(struct slot *); /* This function is called from HPC, so we need it to not be static */ int ibmphp_configure_card(struct pci_func *, u8); int ibmphp_unconfigure_card(struct slot **, int); extern const struct hotplug_slot_ops ibmphp_hotplug_slot_ops; diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c index 9e3b27744305..bd7557ca4910 100644 --- a/drivers/pci/hotplug/shpchp_hpc.c +++ b/drivers/pci/hotplug/shpchp_hpc.c @@ -295,7 +295,7 @@ static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd) mutex_lock(&slot->ctrl->cmd_lock); if (!shpc_poll_ctrl_busy(ctrl)) { - /* After 1 sec and and the controller is still busy */ + /* After 1 sec and the controller is still busy */ ctrl_err(ctrl, "Controller is still busy after 1 sec\n"); retval = -EBUSY; goto out; diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 0099a00af361..bdc6ba7f39f0 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -579,7 +579,8 @@ err: return ret; } -static void __iomem *msix_map_region(struct pci_dev *dev, unsigned nr_entries) +static void __iomem *msix_map_region(struct pci_dev *dev, + unsigned int nr_entries) { resource_size_t phys_addr; u32 table_offset; diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 7fddd1eb480c..1d98c974381c 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -570,7 +570,7 @@ static int pci_pm_reenable_device(struct pci_dev *pci_dev) { int retval; - /* if the device was enabled before suspend, reenable */ + /* if the device was enabled before suspend, re-enable */ retval = pci_reenable_device(pci_dev); /* * if the device was busmaster before the suspend, make it busmaster diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 96fb803831c4..b88db815ee01 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -269,7 +269,7 @@ static int pci_dev_str_match_path(struct pci_dev *dev, const char *path, const char **endptr) { int ret; - int seg, bus, slot, func; + unsigned int seg, bus, slot, func; char *wpath, *p; char end; @@ -5324,7 +5324,7 @@ const struct attribute_group pci_dev_reset_method_attr_group = { */ int __pci_reset_function_locked(struct pci_dev *dev) { - int i, m, rc = -ENOTTY; + int i, m, rc; might_sleep(); @@ -6360,11 +6360,12 @@ EXPORT_SYMBOL_GPL(pci_pr3_present); * cannot be left as a userspace activity). DMA aliases should therefore * be configured via quirks, such as the PCI fixup header quirk. */ -void pci_add_dma_alias(struct pci_dev *dev, u8 devfn_from, unsigned nr_devfns) +void pci_add_dma_alias(struct pci_dev *dev, u8 devfn_from, + unsigned int nr_devfns) { int devfn_to; - nr_devfns = min(nr_devfns, (unsigned) MAX_NR_DEVFNS - devfn_from); + nr_devfns = min(nr_devfns, (unsigned int)MAX_NR_DEVFNS - devfn_from); devfn_to = devfn_from + nr_devfns - 1; if (!dev->dma_alias_mask) diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 9784fdcf3006..9fa1f97e5b27 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -57,7 +57,7 @@ struct aer_stats { * "as seen by this device". Note that this may mean that if an * end point is causing problems, the AER counters may increment * at its link partner (e.g. root port) because the errors will be - * "seen" by the link partner and not the the problematic end point + * "seen" by the link partner and not the problematic end point * itself (which may report all counters as 0 as it never saw any * problems). */ diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 78ca4cbebbb7..087d3658f75c 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2585,11 +2585,12 @@ struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn) } EXPORT_SYMBOL(pci_scan_single_device); -static unsigned next_fn(struct pci_bus *bus, struct pci_dev *dev, unsigned fn) +static unsigned int next_fn(struct pci_bus *bus, struct pci_dev *dev, + unsigned int fn) { int pos; u16 cap = 0; - unsigned next_fn; + unsigned int next_fn; if (pci_ari_enabled(bus)) { if (!dev) @@ -2648,7 +2649,7 @@ static int only_one_child(struct pci_bus *bus) */ int pci_scan_slot(struct pci_bus *bus, int devfn) { - unsigned fn, nr = 0; + unsigned int fn, nr = 0; struct pci_dev *dev; if (only_one_child(bus) && (devfn > 0)) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 126c256bbb8a..aedb78c86ddc 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -501,7 +501,7 @@ static void quirk_s3_64M(struct pci_dev *dev) DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M); -static void quirk_io(struct pci_dev *dev, int pos, unsigned size, +static void quirk_io(struct pci_dev *dev, int pos, unsigned int size, const char *name) { u32 region; @@ -552,7 +552,7 @@ static void quirk_cs5536_vsa(struct pci_dev *dev) DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa); static void quirk_io_region(struct pci_dev *dev, int port, - unsigned size, int nr, const char *name) + unsigned int size, int nr, const char *name) { u16 region; struct pci_bus_region bus_region; @@ -666,7 +666,7 @@ static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int p base = devres & 0xffff; size = 16; for (;;) { - unsigned bit = size >> 1; + unsigned int bit = size >> 1; if ((bit & mask) == bit) break; size = bit; @@ -692,7 +692,7 @@ static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int mask = (devres & 0x3f) << 16; size = 128 << 16; for (;;) { - unsigned bit = size >> 1; + unsigned int bit = size >> 1; if ((bit & mask) == bit) break; size = bit; @@ -806,7 +806,7 @@ static void ich6_lpc_acpi_gpio(struct pci_dev *dev) "ICH6 GPIO"); } -static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, +static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned int reg, const char *name, int dynsize) { u32 val; @@ -850,7 +850,7 @@ static void quirk_ich6_lpc(struct pci_dev *dev) DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc); -static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned reg, +static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned int reg, const char *name) { u32 val; @@ -2700,7 +2700,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, * then the device can't use INTx interrupts. Tegra's PCIe root ports don't * generate MSI interrupts for PME and AER events instead only INTx interrupts * are generated. Though Tegra's PCIe root ports can generate MSI interrupts - * for other events, since PCIe specificiation doesn't support using a mix of + * for other events, since PCIe specification doesn't support using a mix of * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port * service drivers registering their respective ISRs for MSIs. */ diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index 8fc9a4e911e3..e18d3a4383ba 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -85,7 +85,7 @@ static size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, { void __iomem *image; int last_image; - unsigned length; + unsigned int length; image = rom; do { diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 2ce636937c6e..547396ec50b5 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1525,7 +1525,7 @@ static void pci_bridge_release_resources(struct pci_bus *bus, { struct pci_dev *dev = bus->self; struct resource *r; - unsigned old_flags = 0; + unsigned int old_flags = 0; struct resource *b_res; int idx = 1; diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c index 7129494754dd..cc7d26b015f3 100644 --- a/drivers/pci/setup-irq.c +++ b/drivers/pci/setup-irq.c @@ -8,7 +8,6 @@ * David Miller (davem@redhat.com) */ - #include <linux/kernel.h> #include <linux/pci.h> #include <linux/errno.h> @@ -28,25 +27,26 @@ void pci_assign_irq(struct pci_dev *dev) return; } - /* If this device is not on the primary bus, we need to figure out - which interrupt pin it will come in on. We know which slot it - will come in on 'cos that slot is where the bridge is. Each - time the interrupt line passes through a PCI-PCI bridge we must - apply the swizzle function. */ - + /* + * If this device is not on the primary bus, we need to figure out + * which interrupt pin it will come in on. We know which slot it + * will come in on because that slot is where the bridge is. Each + * time the interrupt line passes through a PCI-PCI bridge we must + * apply the swizzle function. + */ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); /* Cope with illegal. */ if (pin > 4) pin = 1; if (pin) { - /* Follow the chain of bridges, swizzling as we go. */ + /* Follow the chain of bridges, swizzling as we go. */ if (hbrg->swizzle_irq) slot = (*(hbrg->swizzle_irq))(dev, &pin); /* - * If a swizzling function is not used map_irq must - * ignore slot + * If a swizzling function is not used, map_irq() must + * ignore slot. */ irq = (*(hbrg->map_irq))(dev, slot, pin); if (irq == -1) @@ -56,7 +56,9 @@ void pci_assign_irq(struct pci_dev *dev) pci_dbg(dev, "assign IRQ: got %d\n", dev->irq); - /* Always tell the device, so the driver knows what is - the real IRQ to use; the device does not use it. */ + /* + * Always tell the device, so the driver knows what is the real IRQ + * to use; the device does not use it. + */ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); } |