From: Bjorn Helgaas <bjorn.helgaas@hp.com>
Date: Tue, 9 Dec 2008 23:12:12 +0000 (-0700)
Subject: PCI: arm: use generic pci_swizzle_interrupt_pin()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f14d766a1a438fdc69d04b876965d6b26b071f14;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

PCI: arm: use generic pci_swizzle_interrupt_pin()

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

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---

diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index 17a59b6e521f..5c5a0bc06709 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -491,17 +491,17 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
  */
 u8 __devinit pci_std_swizzle(struct pci_dev *dev, u8 *pinp)
 {
-	int pin = *pinp - 1;
+	int pin = *pinp;
 
 	while (dev->bus->self) {
-		pin = (pin + PCI_SLOT(dev->devfn)) & 3;
+		pin = pci_swizzle_interrupt_pin(dev, pin);
 		/*
 		 * move up the chain of bridges,
 		 * swizzling as we go.
 		 */
 		dev = dev->bus->self;
 	}
-	*pinp = pin + 1;
+	*pinp = pin;
 
 	return PCI_SLOT(dev->devfn);
 }
diff --git a/arch/arm/mach-integrator/pci.c b/arch/arm/mach-integrator/pci.c
index af7d3ff013ec..2fdb95433f0a 100644
--- a/arch/arm/mach-integrator/pci.c
+++ b/arch/arm/mach-integrator/pci.c
@@ -63,13 +63,7 @@
  *
  * 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.  
  */
-static inline int bridge_swizzle(int pin, unsigned int slot) 
-{
-	return (pin + slot) & 3;
-}
 
 /*
  * This routine handles multiple bridges.
@@ -81,15 +75,14 @@ static u8 __init integrator_swizzle(struct pci_dev *dev, u8 *pinp)
 	if (pin == 0)
 		pin = 1;
 
-	pin -= 1;
 	while (dev->bus->self) {
-		pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+		pin = pci_swizzle_interrupt_pin(dev, pin);
 		/*
 		 * move up the chain of bridges, swizzling as we go.
 		 */
 		dev = dev->bus->self;
 	}
-	*pinp = pin + 1;
+	*pinp = pin;
 
 	return PCI_SLOT(dev->devfn);
 }