PCI: alpha: use generic pci_swizzle_interrupt_pin()

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

Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

arch/alpha/kernel/pci.c

@@ -328,7 +328,7 @@ common_swizzle(struct pci_dev *dev, u8 *pinp)
 	u8 pin = *pinp;
 
 	while (dev->bus->parent) {
-		pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+		pin = pci_swizzle_interrupt_pin(dev, pin);
 		/* Move up the chain of bridges. */
 		dev = dev->bus->self;
         }

arch/alpha/kernel/pci_impl.h

@@ -106,16 +106,11 @@ struct pci_iommu_arena;
  *   Where A = pin 1, B = pin 2 and so on and pin=0 = default = A.
  *   Thus, each swizzle is ((pin-1) + (device#-4)) % 4
  *
- *   The following code swizzles for exactly one bridge.  The routine
+ *   pci_swizzle_interrupt_pin() swizzles for exactly one bridge.  The routine
  *   common_swizzle below handles multiple bridges.  But there are a
- *   couple boards that do strange things, so we define this here.
+ *   couple boards that do strange things.
  */
 
-static inline u8 bridge_swizzle(u8 pin, u8 slot) 
-{
-	return (((pin-1) + slot) % 4) + 1;
-}
-
 
 /* The following macro is used to implement the table-based irq mapping
    function for all single-bus Alphas.  */

arch/alpha/kernel/sys_dp264.c

@@ -481,7 +481,7 @@ monet_swizzle(struct pci_dev *dev, u8 *pinp)
 				slot = PCI_SLOT(dev->devfn);
 				break;
 			}
-			pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn)) ;
+			pin = pci_swizzle_interrupt_pin(dev, pin);
 
 			/* Move up the chain of bridges.  */
 			dev = dev->bus->self;

arch/alpha/kernel/sys_eiger.c

@@ -204,7 +204,7 @@ eiger_swizzle(struct pci_dev *dev, u8 *pinp)
 			break;
 		}
 		/* Must be a card-based bridge.  */
-		pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+		pin = pci_swizzle_interrupt_pin(dev, pin);
 
 		/* Move up the chain of bridges.  */
 		dev = dev->bus->self;

arch/alpha/kernel/sys_miata.c

@@ -219,7 +219,7 @@ miata_swizzle(struct pci_dev *dev, u8 *pinp)
 				slot = PCI_SLOT(dev->devfn) + 9;
 				break;
 			}
-			pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+			pin = pci_swizzle_interrupt_pin(dev, pin);
 
 			/* Move up the chain of bridges.  */
 			dev = dev->bus->self;

arch/alpha/kernel/sys_noritake.c

@@ -257,7 +257,7 @@ noritake_swizzle(struct pci_dev *dev, u8 *pinp)
 				slot = PCI_SLOT(dev->devfn) + 15;
 				break;
 			}
-			pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn)) ;
+			pin = pci_swizzle_interrupt_pin(dev, pin);
 
 			/* Move up the chain of bridges.  */
 			dev = dev->bus->self;

arch/alpha/kernel/sys_ruffian.c

@@ -160,7 +160,7 @@ ruffian_swizzle(struct pci_dev *dev, u8 *pinp)
 				slot = PCI_SLOT(dev->devfn) + 10;
 				break;
 			}
-			pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+			pin = pci_swizzle_interrupt_pin(dev, pin);
 
 			/* Move up the chain of bridges.  */
 			dev = dev->bus->self;

arch/alpha/kernel/sys_sable.c

@@ -425,7 +425,7 @@ lynx_swizzle(struct pci_dev *dev, u8 *pinp)
 				slot = PCI_SLOT(dev->devfn) + 11;
 				break;
 			}
-			pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn)) ;
+			pin = pci_swizzle_interrupt_pin(dev, pin);
 
 			/* Move up the chain of bridges.  */
 			dev = dev->bus->self;