ucb1x00_unregister_driver
ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
EXPORT_SYMBOL(ucb1x00_unregister_driver);
ucb1x00_unregister_driver(&ucb1x00_ts_driver);
ucb1x00_unregister_driver(&collie_bat_driver);
void ucb1x00_unregister_driver(struct ucb1x00_driver *);