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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>
This commit is contained in:
Rafael J. Wysocki 2010-12-18 13:29:45 +01:00 committed by Jesse Barnes
parent e819eb8687
commit 994e0b2c36
1 changed files with 2 additions and 1 deletions
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3
drivers/pci/hotplug/pciehp_acpi.c
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@ -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);