diff options
| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-19 12:59:55 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-19 12:59:55 -0800 |
| commit | 733abe4fff3afa13e301bc8bc5bee9aac4b59fdc (patch) | |
| tree | c11f08a401783848deb7f41f65e990333971ba66 /drivers/pci/setup-irq.c | |
| parent | 5fe8252fc3a21666cf19053fbd7ec7bd9664f5d9 (diff) | |
| parent | 81bb0e198b4638ac65233b316f4588639dfe1fcd (diff) | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6:
PCI: Make PCI device numa-node attribute visible in sysfs
PCI: add systems for automatic breadth-first device sorting
PCI: PCI devices get assigned redundant IRQs
PCI: Make CARDBUS_MEM_SIZE and CARDBUS_IO_SIZE boot options
PCI: pci.txt fix __devexit() usage
PCI/sysfs/kobject kernel-doc fixes
Diffstat (limited to 'drivers/pci/setup-irq.c')
| -rw-r--r-- | drivers/pci/setup-irq.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c index a251289c995..568f1877315 100644 --- a/drivers/pci/setup-irq.c +++ b/drivers/pci/setup-irq.c @@ -24,7 +24,7 @@ pdev_fixup_irq(struct pci_dev *dev, int (*map_irq)(struct pci_dev *, u8, u8)) { u8 pin, slot; - int irq; + int irq = 0; /* 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 @@ -33,16 +33,18 @@ pdev_fixup_irq(struct pci_dev *dev, apply the swizzle function. */ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); - /* Cope with 0 and illegal. */ - if (pin == 0 || pin > 4) + /* Cope with illegal. */ + if (pin > 4) pin = 1; - /* Follow the chain of bridges, swizzling as we go. */ - slot = (*swizzle)(dev, &pin); + if (pin != 0) { + /* Follow the chain of bridges, swizzling as we go. */ + slot = (*swizzle)(dev, &pin); - irq = (*map_irq)(dev, slot, pin); - if (irq == -1) - irq = 0; + irq = (*map_irq)(dev, slot, pin); + if (irq == -1) + irq = 0; + } dev->irq = irq; pr_debug("PCI: fixup irq: (%s) got %d\n", |