PCI: fix wrong assumption in pci_find_upstream_pcie_bridge
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@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 5af8bd5..710d4ea 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -29,7 +29,7 @@
if (pdev->is_pcie)
return NULL;
while (1) {
- if (!pdev->bus->self)
+ if (!pdev->bus->parent)
break;
pdev = pdev->bus->self;
/* a p2p bridge */