diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2008-12-09 16:11:46 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 11:12:48 -0800 |
| commit | 878f2e50fd1cfea575cdca5bf019c2175dc64131 (patch) | |
| tree | 807b5bc7312fe4f15e7317aa683dc9b1ee1db5fc | |
| parent | 98d3333a13029ab07ca1d1bfb9bfa138ea76c3c0 (diff) | |
| download | linux-3.10-878f2e50fd1cfea575cdca5bf019c2175dc64131.tar.gz linux-3.10-878f2e50fd1cfea575cdca5bf019c2175dc64131.tar.bz2 linux-3.10-878f2e50fd1cfea575cdca5bf019c2175dc64131.zip | |
PCI: use config space encoding in pci_get_interrupt_pin()
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>
| -rw-r--r-- | arch/x86/pci/irq.c | 2 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c index 373b9afe6d4..399a172f047 100644 --- a/arch/x86/pci/irq.c +++ b/arch/x86/pci/irq.c @@ -533,7 +533,7 @@ static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq, { struct pci_dev *bridge; int pin = pci_get_interrupt_pin(dev, &bridge); - return pcibios_set_irq_routing(bridge, pin, irq); + return pcibios_set_irq_routing(bridge, pin - 1, irq); } #endif diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 3222f902270..bd52ca4c289 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -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; |