diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c
index 289c7527713..d490d028950 100644
--- a/drivers/usb/gadget/cdc2.c
+++ b/drivers/usb/gadget/cdc2.c
@@ -124,7 +124,7 @@ static int __init cdc_do_config(struct usb_configuration *c)
 		return status;
 
 	status = acm_bind_config(c, 0);
-	if (status == 0)
+	if (status < 0)
 		return status;
 
 	return 0;
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index 88d4f5452c4..abf9505d3a7 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -1090,6 +1090,9 @@ void gserial_cleanup(void)
 	unsigned	i;
 	struct gs_port	*port;
 
+	if (!gs_tty_driver)
+		return;
+
 	/* start sysfs and /dev/ttyGS* node removal */
 	for (i = 0; i < n_ports; i++)
 		tty_unregister_device(gs_tty_driver, i);