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PCI: use config space encoding in pci_get_interrupt_pin()

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This patch makes pci_get_interrupt_pin() return values encoded
the same way as the "Interrupt Pin" value in PCI config space,
i.e., 1=INTA, ..., 4=INTD.

pirq_bios_set() is the only in-tree caller of pci_get_interrupt_pin()
and pci_get_interrupt_pin() is not exported.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: hpa@zytor.com
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Bjorn Helgaas
2008-12-09 16:11:46 -07:00
committed by Jesse Barnes
parent 98d3333a13
commit 878f2e50fd
2 changed files with 3 additions and 3 deletions
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4
drivers/pci/pci.c
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@@ -1374,9 +1374,9 @@ pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge)
pin = dev->pin;
if (!pin)
return -1;
pin--;
while (dev->bus->self) {
pin = (pin + PCI_SLOT(dev->devfn)) % 4;
pin = (((pin - 1) + PCI_SLOT(dev->devfn)) % 4) + 1;
dev = dev->bus->self;
}
*bridge = dev;