diff --git a/[refs] b/[refs]
index 51ef77b5c5ba..6aa0a4d92e2d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9f7a60d6e47a70957e5f6676cfe8c83956b08aa6
+refs/heads/master: 33143ea1a34d12699e6aa222ba124498abcfe4d1
diff --git a/trunk/drivers/input/serio/serio.c b/trunk/drivers/input/serio/serio.c
index 5895202b972c..a8f3bc1dff22 100644
--- a/trunk/drivers/input/serio/serio.c
+++ b/trunk/drivers/input/serio/serio.c
@@ -769,8 +769,10 @@ static int serio_driver_remove(struct device *dev)
 
 static void serio_cleanup(struct serio *serio)
 {
+	mutex_lock(&serio->drv_mutex);
 	if (serio->drv && serio->drv->cleanup)
 		serio->drv->cleanup(serio);
+	mutex_unlock(&serio->drv_mutex);
 }
 
 static void serio_shutdown(struct device *dev)