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>

diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index c57d9d5..c8b6907 100644 (file)
--- 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;