snd_pcm_open_substream  480 include/sound/pcm.h int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file,
snd_pcm_open_substream 2312 sound/core/oss/pcm_oss.c 		err = snd_pcm_open_substream(pcm, idx, file, &substream);
snd_pcm_open_substream 2076 sound/core/pcm_native.c 	err = snd_pcm_open_substream(pcm, stream, file, &substream);