snd_soc_dpcm_get_substream
snd_soc_dpcm_get_substream(struct snd_soc_pcm_runtime *be, int stream);
substream_be = snd_soc_dpcm_get_substream(be, stream);
be_substream = snd_soc_dpcm_get_substream(be, dir);
fe_substream = snd_soc_dpcm_get_substream(fe, stream);
be_substream = snd_soc_dpcm_get_substream(be, stream);
be_substream = snd_soc_dpcm_get_substream(be, stream);
fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, stream);
struct snd_pcm_substream *substream = snd_soc_dpcm_get_substream(fe, stream);
if (!snd_soc_dpcm_get_substream(be, stream))
struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream);
snd_soc_dpcm_get_substream(be, stream);
struct snd_pcm_substream *fe_substream = snd_soc_dpcm_get_substream(fe, stream);
be_substream = snd_soc_dpcm_get_substream(be, stream);
snd_soc_dpcm_get_substream(be, stream);
snd_soc_dpcm_get_substream(be, stream);
be_substream = snd_soc_dpcm_get_substream(be, stream);
be_substream = snd_soc_dpcm_get_substream(be, stream);
be_substream = snd_soc_dpcm_get_substream(be, stream);
snd_soc_dpcm_get_substream(be, stream);
EXPORT_SYMBOL_GPL(snd_soc_dpcm_get_substream);
snd_soc_dpcm_get_substream(fe, stream);
fe_substream = snd_soc_dpcm_get_substream(dpcm->fe, dir);