snd_pcm_sync_id 387 include/sound/pcm.h union snd_pcm_sync_id sync; /* hardware synchronization ID */ snd_pcm_sync_id 342 include/uapi/sound/asound.h union snd_pcm_sync_id sync; /* hardware synchronization ID */ snd_pcm_sync_id 342 tools/include/uapi/sound/asound.h union snd_pcm_sync_id sync; /* hardware synchronization ID */