f81232_get_register
status = f81232_get_register(port, reg, &tmp);
status = f81232_get_register(port, MODEM_STATUS_REGISTER,
status = f81232_get_register(port, LINE_CONTROL_REGISTER,
status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);