snd_pcm_hw_refine_old_user 62 sound/core/pcm_native.c static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, snd_pcm_hw_refine_old_user 2544 sound/core/pcm_native.c return snd_pcm_hw_refine_old_user(substream, arg);