PCI: x86: use generic pci_swizzle_interrupt_pin()

Use the generic pci_swizzle_interrupt_pin() instead of arch-specific code.

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>

2 files changed, 3 insertions, 8 deletions

diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c
index e1d605bfeb47..4064345cf144 100644
--- a/arch/x86/pci/irq.c
+++ b/arch/x86/pci/irq.c
@@ -1068,7 +1068,7 @@ static void __init pcibios_fixup_irqs(void)
                                 struct pci_dev *bridge = dev->bus->self;
                                 int bus;
 
-                                pin = (((pin - 1) + PCI_SLOT(dev->devfn)) % 4) + 1;
+                                pin = pci_swizzle_interrupt_pin(dev, pin);
                                 bus = bridge->bus->number;
                                 irq = IO_APIC_get_PCI_irq_vector(bus,
                                                 PCI_SLOT(bridge->devfn), pin - 1);
@@ -1232,7 +1232,7 @@ static int pirq_enable_irq(struct pci_dev *dev)
                         while (irq < 0 && dev->bus->parent) { /* go back to the bridge */
                                 struct pci_dev *bridge = dev->bus->self;
 
-                                pin = (((pin - 1) + PCI_SLOT(dev->devfn)) % 4) + 1;
+                                pin = pci_swizzle_interrupt_pin(dev, pin);
                                 irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
                                                 PCI_SLOT(bridge->devfn), pin - 1);
                                 if (irq >= 0)
diff --git a/arch/x86/pci/visws.c b/arch/x86/pci/visws.c
index 16d0c0eb0d19..2c54e7e03f53 100644
--- a/arch/x86/pci/visws.c
+++ b/arch/x86/pci/visws.c
@@ -24,17 +24,12 @@ static void pci_visws_disable_irq(struct pci_dev *dev) { }
 
 unsigned int pci_bus0, pci_bus1;
 
-static inline u8 bridge_swizzle(u8 pin, u8 slot) 
-{
-        return (((pin - 1) + slot) % 4) + 1;
-}
-
 static u8 __init visws_swizzle(struct pci_dev *dev, u8 *pinp)
 {
         u8 pin = *pinp;
 
         while (dev->bus->self) {        /* Move up the chain of bridges. */
-                pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+                pin = pci_swizzle_interrupt_pin(dev, pin);
                 dev = dev->bus->self;
         }
         *pinp = pin;