[PATCH] ACPI / hotplug / PCI: Scan root bus under the PCI rescan-remove lock

From: Rafael J. Wysocki
Date: Sun Feb 02 2014 - 20:33:34 EST

From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

Since acpiphp_check_bridge() called by acpiphp_check_host_bridge()
does things that require PCI rescan-remove locking around it,
make acpiphp_check_host_bridge() use that locking.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

One more thing I overlooked in the PCI rescan-remove locking patchset.

I just found it sitting there in a dark dusty corner and staring at me in
horror when I approached it with a vacuum cleaner ...

Anyway, 3.14-rc2 material on top of patches [1-2/13] from this series:


drivers/pci/hotplug/acpiphp_glue.c | 4 ++++
1 file changed, 4 insertions(+)

Index: linux-pm/drivers/pci/hotplug/acpiphp_glue.c
--- linux-pm.orig/drivers/pci/hotplug/acpiphp_glue.c
+++ linux-pm/drivers/pci/hotplug/acpiphp_glue.c
@@ -829,7 +829,11 @@ void acpiphp_check_host_bridge(acpi_hand

bridge = acpiphp_handle_to_bridge(handle);
if (bridge) {
+ pci_lock_rescan_remove();
+ pci_unlock_rescan_remove();

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