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

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@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 6e5bd79af810..931d0b44eace 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -829,7 +829,11 @@ void acpiphp_check_host_bridge(acpi_handle handle)
 
         bridge = acpiphp_handle_to_bridge(handle);
         if (bridge) {
+                pci_lock_rescan_remove();
+
                 acpiphp_check_bridge(bridge);
+
+                pci_unlock_rescan_remove();
                 put_bridge(bridge);
         }
 }