diff --git a/[refs] b/[refs]
index c8c6f9740bff..fe8b521597ce 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 400ced61fa4914457d7e0a38e7c0fc6fd208694b
+refs/heads/master: 401097ea4b89846d66ac78f7f108d49c2e922d9c
diff --git a/trunk/drivers/base/core.c b/trunk/drivers/base/core.c
index 1977d4beb89e..7e8576d7822d 100644
--- a/trunk/drivers/base/core.c
+++ b/trunk/drivers/base/core.c
@@ -22,6 +22,7 @@
 #include <linux/kallsyms.h>
 #include <linux/semaphore.h>
 #include <linux/mutex.h>
+#include <linux/async.h>
 
 #include "base.h"
 #include "power/power.h"
@@ -1665,4 +1666,5 @@ void device_shutdown(void)
 	kobject_put(sysfs_dev_char_kobj);
 	kobject_put(sysfs_dev_block_kobj);
 	kobject_put(dev_kobj);
+	async_synchronize_full();
 }