acpiphp: fix missing acpiphp_glue_exit()

acpiphp_glue_exit() needs to be called to unwind when no slots found.
(It fixes data corruption when reloading acpiphp driver with no such devices)

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index c57d9d5ce84e..c8b690741149 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -303,8 +303,10 @@ static int __init init_acpi(void)
         /* read initial number of slots */
         if (!retval) {
                 num_slots = acpiphp_get_num_slots();
-                if (num_slots == 0)
+                if (num_slots == 0) {
+                        acpiphp_glue_exit();
                         retval = -ENODEV;
+                }
         }
 
         return retval;