Current pci_find_upstream_pcie_bridge() has a wrong assumption that
pci_bus->self is NULL on the root pci bus. But it might not true on
some platforms. Because of this wrong assumption, current
pci_find_upstream_pcie_bridge() might cause endless loop. We must
check pci_bus->parent instead.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
---
drivers/pci/search.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.29-rc2/drivers/pci/search.c
===================================================================
--- linux-2.6.29-rc2.orig/drivers/pci/search.c
+++ linux-2.6.29-rc2/drivers/pci/search.c
@@ -29,7 +29,7 @@ pci_find_upstream_pcie_bridge(struct pci
if (pdev->is_pcie)
return NULL;
while (1) {
- if (!pdev->bus->self)
+ if (!pdev->bus->parent)
break;
pdev = pdev->bus->self;
/* a p2p bridge */
--
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