diff --git a/[refs] b/[refs]
index f0062103587f..336477002b95 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 44a0c0190b500ee6bcfc0976fe540f65dee2cd67
+refs/heads/master: b23097b793081358a6d943263c91bae4c955c4e3
diff --git a/trunk/drivers/usb/gadget/u_serial.c b/trunk/drivers/usb/gadget/u_serial.c
index a0f79df4c6c2..3e8dcb5455e3 100644
--- a/trunk/drivers/usb/gadget/u_serial.c
+++ b/trunk/drivers/usb/gadget/u_serial.c
@@ -1184,6 +1184,7 @@ void gserial_cleanup(void)
 	n_ports = 0;
 
 	tty_unregister_driver(gs_tty_driver);
+	put_tty_driver(gs_tty_driver);
 	gs_tty_driver = NULL;
 
 	pr_debug("%s: cleaned up ttyGS* support\n", __func__);