diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index a0f79df4c6c2086895b2562a443bbafc25359ade..3e8dcb5455e3a4912f7bc0fc525b69c524cade7f 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/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__);