From d45e0855488032ea62ec5638fb1dcd47367f8ddb Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Thu, 15 Jan 2009 15:12:27 -0500 Subject: [PATCH] ACPI PCI hotplug: harden against panic regression ACPI hotplug panic with current git head http://lkml.org/lkml/2009/1/10/136 Rather than reverting the entire commit that causes the crash: e8c331e963c58b83db24b7d0e39e8c07f687dbc6 "PCI hotplug: introduce functions for ACPI slot detection" simply harden against it while the changes to the hotplug code on this particularl machine are understood. Signed-off-by: James Bottomley Acked-by: Jesse Barnes Signed-off-by: Len Brown --- drivers/pci/hotplug/acpiphp_glue.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index f09b1010d47..803d9ddd6e7 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -266,6 +266,8 @@ static int detect_ejectable_slots(struct pci_bus *pbus) int found = acpi_pci_detect_ejectable(pbus); if (!found) { acpi_handle bridge_handle = acpi_pci_get_bridge_handle(pbus); + if (!bridge_handle) + return 0; acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, (u32)1, is_pci_dock_device, (void *)&found, NULL); } -- 2.41.0