int snd_pcm_start(struct snd_pcm_substream *substream)
{
	return snd_pcm_action(&snd_pcm_action_start, substream,
			      SNDRV_PCM_STATE_RUNNING);
}
int snd_pcm_start(struct snd_pcm_substream *substream)
{
	return snd_pcm_action(&snd_pcm_action_start, substream,
			      SNDRV_PCM_STATE_RUNNING);
}