RTRACK2_MAX
return isa_register_driver(&rtrack2_driver.driver, RTRACK2_MAX);
static int io[RTRACK2_MAX] = { [0] = CONFIG_RADIO_RTRACK2_PORT,
[1 ... (RTRACK2_MAX - 1)] = -1 };
static int radio_nr[RTRACK2_MAX] = { [0 ... (RTRACK2_MAX - 1)] = -1 };