ALSA: pcm: Unify snd_pcm_group initialization
There are multiple open codes that initialize the same object.
Create a common helper function instead.
Also, use kzalloc() to be safer at creating a group object, and move
the initialization out of the critical section.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 01b9d62..88a2998 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -753,9 +753,7 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count)
}
}
substream->group = &substream->self_group;
- spin_lock_init(&substream->self_group.lock);
- mutex_init(&substream->self_group.mutex);
- INIT_LIST_HEAD(&substream->self_group.substreams);
+ snd_pcm_group_init(&substream->self_group);
list_add_tail(&substream->link_list, &substream->self_group.substreams);
atomic_set(&substream->mmap_count, 0);
prev = substream;
