static void relink_to_local(struct snd_pcm_substream *substream)
{
	snd_pcm_stream_lock_nested(substream);
	snd_pcm_group_assign(substream, &substream->self_group);
	snd_pcm_stream_unlock(substream);
}
static void relink_to_local(struct snd_pcm_substream *substream)
{
	snd_pcm_stream_lock_nested(substream);
	snd_pcm_group_assign(substream, &substream->self_group);
	snd_pcm_stream_unlock(substream);
}