port->gs.closing_wait = 30 * HZ;
port->gs.rd = &a2232_real_driver;
#ifdef NEW_WRITE_LOCKING
- init_MUTEX(&(port->gs.port_write_mutex));
+ mutex_init(&(port->gs.port_write_mutex));
#endif
init_waitqueue_head(&port->gs.open_wait);
init_waitqueue_head(&port->gs.close_wait);