snd_mpu401_driver 123 sound/drivers/mpu401/mpu401.c static struct platform_driver snd_mpu401_driver = { snd_mpu401_driver 223 sound/drivers/mpu401/mpu401.c platform_driver_unregister(&snd_mpu401_driver); snd_mpu401_driver 230 sound/drivers/mpu401/mpu401.c if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)