From: Kenji Kaneshige Date: Tue, 17 Feb 2009 05:14:36 +0000 (+0900) Subject: PCI: fix wrong assumption in pci_find_upstream_pcie_bridge X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=151ab36a2ea0b3181d103f7244636e0d16e685de;p=linux-beck.git 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 Signed-off-by: Jesse Barnes --- diff --git a/drivers/pci/search.c b/drivers/pci/search.c index 5af8bd538149..710d4ea69568 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -29,7 +29,7 @@ pci_find_upstream_pcie_bridge(struct pci_dev *pdev) if (pdev->is_pcie) return NULL; while (1) { - if (!pdev->bus->self) + if (!pdev->bus->parent) break; pdev = pdev->bus->self; /* a p2p bridge */