sound_remove_unit 431 sound/sound_core.c sound_remove_unit(&chains[unit % SOUND_STEP], unit); sound_remove_unit 446 sound/sound_core.c sound_remove_unit(&chains[0], unit); sound_remove_unit 461 sound/sound_core.c return sound_remove_unit(&chains[2], unit); sound_remove_unit 478 sound/sound_core.c return sound_remove_unit(&chains[3], unit);