Current pci_get_interrupt_pin() seems to have an assumption that
pci_bus->self is NULL on the root pci bus. But it might not be true on
some platforms. Because of this wrong assumption, current
pci_get_interrupt_pin() 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
@@ -1433,7 +1433,7 @@ pci_get_interrupt_pin(struct pci_dev *de
if (!pin)
return -1;
- while (dev->bus->self) {
+ while (dev->bus->parent) {
pin = pci_swizzle_interrupt_pin(dev, pin);
dev = dev->bus->self;
}
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