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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2009-01-15 15:12:27 -0500
committerLen Brown <len.brown@intel.com>2009-01-16 15:20:00 -0500
commitd45e0855488032ea62ec5638fb1dcd47367f8ddb (patch)
tree801341825d4f3ec51746715e3e29b36e7337caff
parent88d998c264722cd6e8fafa42aee191f7d9194960 (diff)
downloadlinux-stericsson-d45e0855488032ea62ec5638fb1dcd47367f8ddb.tar.gz
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 <James.Bottomley@HansenPartnership.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index f09b1010d477..803d9ddd6e75 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);
}