snd_pcm_sync_ptr 495 include/uapi/sound/asound.h struct snd_pcm_sync_ptr { snd_pcm_sync_ptr 2761 sound/core/pcm_native.c static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, snd_pcm_sync_ptr 495 tools/include/uapi/sound/asound.h struct snd_pcm_sync_ptr {