snd_pcm_info_user 555 include/sound/pcm.h int snd_pcm_info_user(struct snd_pcm_substream *substream, snd_pcm_info_user 145 sound/core/pcm.c err = snd_pcm_info_user(substream, info); snd_pcm_info_user 2919 sound/core/pcm_native.c return snd_pcm_info_user(substream, arg);