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authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>2009-02-17 14:14:36 +0900
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-03-20 10:48:03 -0700
commit151ab36a2ea0b3181d103f7244636e0d16e685de (patch)
treee048af45809c7178a574a077409eb4009596595b /drivers/pci/search.c
parentd391f00f0e7fb6d883c6724b31a1799e19a584c5 (diff)
downloadop-kernel-dev-151ab36a2ea0b3181d103f7244636e0d16e685de.zip
op-kernel-dev-151ab36a2ea0b3181d103f7244636e0d16e685de.tar.gz
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>
Diffstat (limited to 'drivers/pci/search.c')
-rw-r--r--drivers/pci/search.c2
1 files changed, 1 insertions, 1 deletions
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 @@ 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 */
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