diff options
| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2009-02-17 05:15:45 (GMT) |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-03-20 17:48:04 (GMT) |
| commit | c2a3072e010943ac749794622f26b3ef54de25be (patch) | |
| tree | 3cb9290ded157827f3cc48571e34cc5b10cba55f /drivers/pci/pci.c | |
| parent | f92d4e29d785f1d4217dee7f1ae6ff7140547ed5 (diff) | |
| download | linux-c2a3072e010943ac749794622f26b3ef54de25be.tar.xz | |
PCI: fix wrong assumption in pci_get_interrupt_pin
Current pci_get_interrupt_pin() seems to have an assumption that
pci_bus->self is NULL on the root pci bus. But it might not be true on
some platforms. Because of this wrong assumption, current
pci_get_interrupt_pin() 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 0b3e20f..0cfed9e 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1484,7 +1484,7 @@ pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge) if (!pin) return -1; - while (dev->bus->self) { + while (dev->bus->parent) { pin = pci_swizzle_interrupt_pin(dev, pin); dev = dev->bus->self; } |