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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-02-20 20:13:30 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-20 20:13:30 +0100 |
| commit | 5a84d159061d914c8dd4aa372ac6e9529c2be453 (patch) | |
| tree | 9b08af78085334af44414adafe0096276f8fe0ff /drivers/pci/setup-irq.c | |
| parent | [ARM] Merge remaining IOP code (diff) | |
| parent | [ARM] 4165/1: S3C24XX: Select CONFIG_NO_IOPORT (diff) | |
| download | linux-5a84d159061d914c8dd4aa372ac6e9529c2be453.tar.xz linux-5a84d159061d914c8dd4aa372ac6e9529c2be453.zip | |
Merge ARM 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 a251289c9958..568f1877315c 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", |