void snd_pcm_group_init(struct snd_pcm_group *group)
{
	spin_lock_init(&group->lock);
	mutex_init(&group->mutex);
	INIT_LIST_HEAD(&group->substreams);
	refcount_set(&group->refs, 1);
}
void snd_pcm_group_init(struct snd_pcm_group *group)
{
	spin_lock_init(&group->lock);
	mutex_init(&group->mutex);
	INIT_LIST_HEAD(&group->substreams);
	refcount_set(&group->refs, 1);
}