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authorRafael J. Wysocki <rjw@sisk.pl>2010-12-18 13:29:45 +0100
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-12-23 12:51:49 -0800
commit994e0b2c3646ce0ca0e4546e6b10c5cf66b976bf (patch)
tree9f93e8f4fc896eb4fc90dd64547e920665fc7d2a
parente819eb8687767cefca7b6abf5ac6d5efcf581eeb (diff)
downloadlinux-994e0b2c3646ce0ca0e4546e6b10c5cf66b976bf.tar.bz2
PCI hotplug: Fix unexpected driver unregister in pciehp_acpi.c
If pcie_ports_disabled is set, pcie_port_service_register() returns error code and select_detection_mode() should not attempt to unregister dummy_driver and use dummy_slots. It should return PCIEHP_DETECT_ACPI immediately instead. Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
-rw-r--r--drivers/pci/hotplug/pciehp_acpi.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pci/hotplug/pciehp_acpi.c b/drivers/pci/hotplug/pciehp_acpi.c
index 2574700db461..5f7226223a62 100644
--- a/drivers/pci/hotplug/pciehp_acpi.c
+++ b/drivers/pci/hotplug/pciehp_acpi.c
@@ -115,7 +115,8 @@ static struct pcie_port_service_driver __initdata dummy_driver = {
static int __init select_detection_mode(void)
{
struct dummy_slot *slot, *tmp;
- pcie_port_service_register(&dummy_driver);
+ if (pcie_port_service_register(&dummy_driver))
+ return PCIEHP_DETECT_ACPI;
pcie_port_service_unregister(&dummy_driver);
list_for_each_entry_safe(slot, tmp, &dummy_slots, list) {
list_del(&slot->list);