[PATCH 8/8] PCI: fix wrong assumption in pci_common_swizzle

[Kenji Kaneshige]

Current pci_common_swizzle() seems to have a assumption that
pci_bus->self is NULL on the pci root bus. But it might not be true on
some platforms. Because of this wrong assumption, pci_common_swizzle()
might cause endless loop. We must check pci_bus->parent instead.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>

---
 drivers/pci/pci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.29-rc2/drivers/pci/pci.c
===================================================================
--- linux-2.6.29-rc2.orig/drivers/pci/pci.c
+++ linux-2.6.29-rc2/drivers/pci/pci.c
@@ -1453,7 +1453,7 @@ u8 pci_common_swizzle(struct pci_dev *de
 {
 	u8 pin = *pinp;
 
-	while (dev->bus->self) {
+	while (dev->bus->parent) {
 		pin = pci_swizzle_interrupt_pin(dev, pin);
 		dev = dev->bus->self;
 	}

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