PCI hotplug: fix wrong assumption in acpi_get_hp_params_from_firmware
authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Tue, 17 Feb 2009 05:13:20 +0000 (14:13 +0900)
committerJesse Barnes <jbarnes@virtuousgeek.org>
Fri, 20 Mar 2009 17:48:00 +0000 (10:48 -0700)
commit267efd7eec5eca62f32f8c9bc1721b578d5da963
tree3bae75d213470f6b56341b1a6328650299b5784b
parentd18690af626b83fef1d1953b9f70e09497060586
PCI hotplug: fix wrong assumption in acpi_get_hp_params_from_firmware

Current acpi_get_hp_params_from_firmware() has a 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
acpi_get_hp_params_from_firmware() 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>
drivers/pci/hotplug/acpi_pcihp.c