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>
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@ -115,7 +115,8 @@ static struct pcie_port_service_driver __initdata dummy_driver = {
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static int __init select_detection_mode(void)
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{
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struct dummy_slot *slot, *tmp;
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pcie_port_service_register(&dummy_driver);
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if (pcie_port_service_register(&dummy_driver))
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return PCIEHP_DETECT_ACPI;
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pcie_port_service_unregister(&dummy_driver);
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list_for_each_entry_safe(slot, tmp, &dummy_slots, list) {
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list_del(&slot->list);
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