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| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2009-02-17 14:16:13 +0900 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-03-20 10:48:05 -0700 |
| commit | c74d724462d1845535667f4d3f720e02e3432e53 (patch) | |
| tree | 2b41310b6710ee40fd26422a22cdb7e73fe80c1b /drivers/pci/pci.c | |
| parent | c2a3072e010943ac749794622f26b3ef54de25be (diff) | |
| download | linux-3.10-c74d724462d1845535667f4d3f720e02e3432e53.tar.gz linux-3.10-c74d724462d1845535667f4d3f720e02e3432e53.tar.bz2 linux-3.10-c74d724462d1845535667f4d3f720e02e3432e53.zip | |
PCI: fix wrong assumption in pci_common_swizzle
Current pci_common_swizzle() seems to have a assumption that
pci_bus->self is NULL on the pci root bus. But it might not be true on
some platforms. Because of this wrong assumption, pci_common_swizzle()
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/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 0cfed9e28ea..8310dc2f943 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1504,7 +1504,7 @@ u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp) { u8 pin = *pinp; - while (dev->bus->self) { + while (dev->bus->parent) { pin = pci_swizzle_interrupt_pin(dev, pin); dev = dev->bus->self; } |