--- zzzz-none-000/linux-2.6.39.4/drivers/usb/serial/usb-serial.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/drivers/usb/serial/usb-serial.c	2021-11-10 13:23:10.000000000 +0000
@@ -1130,11 +1130,9 @@
 				 * driver's port_remove method is called.
 				 */
 				if (!port->dev.driver) {
-					int rc;
-
 					port->dev.driver =
 							&serial->type->driver;
-					rc = device_bind_driver(&port->dev);
+					(void)device_bind_driver(&port->dev);
 				}
 				port->dev_state = PORT_UNREGISTERING;
 				device_del(&port->dev);