RTRACK_MAX
return isa_register_driver(&rtrack_driver.driver, RTRACK_MAX);
static int io[RTRACK_MAX] = { [0] = CONFIG_RADIO_RTRACK_PORT,
[1 ... (RTRACK_MAX - 1)] = -1 };
static int radio_nr[RTRACK_MAX] = { [0 ... (RTRACK_MAX - 1)] = -1 };