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ALSA: aloop: Use the new helper for stop-count refcount

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Replace the open-code for managing the stop-count refcount with the
new helpers.
Only a code cleanup, no functional changes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260610154538.51076-5-tiwai@suse.de
This commit is contained in:
Takashi Iwai
2026-06-10 17:45:34 +02:00
parent 53af356c45
commit c54888c117
1 changed files with 5 additions and 8 deletions
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13
sound/drivers/aloop.c
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@@ -100,8 +100,7 @@ struct loopback_cable {
spinlock_t lock;
struct loopback_pcm *streams[2];
/* in-flight peer stops running outside cable->lock */
atomic_t stop_count;
wait_queue_head_t stop_wait;
struct snd_refcount stop_count;
struct snd_pcm_hardware hw;
/* flags */
unsigned int valid;
@@ -371,7 +370,7 @@ static int loopback_check_format(struct loopback_cable *cable, int stream)
return -EIO;
else if (cruntime->state == SNDRV_PCM_STATE_RUNNING) {
/* close must not free the peer runtime below */
atomic_inc(&cable->stop_count);
snd_refcount_get(&cable->stop_count);
stop_capture = true;
}
}
@@ -404,8 +403,7 @@ static int loopback_check_format(struct loopback_cable *cable, int stream)
if (stop_capture) {
snd_pcm_stop(dpcm_capt->substream, SNDRV_PCM_STATE_DRAINING);
if (atomic_dec_and_test(&cable->stop_count))
wake_up(&cable->stop_wait);
snd_refcount_put(&cable->stop_count);
}
return 0;
@@ -1070,7 +1068,7 @@ static void free_cable(struct snd_pcm_substream *substream)
}
/* Pair with the stop_count increment in loopback_check_format(). */
wait_event(cable->stop_wait, !atomic_read(&cable->stop_count));
snd_refcount_sync(&cable->stop_count);
if (other_alive)
return;
@@ -1274,8 +1272,7 @@ static int loopback_open(struct snd_pcm_substream *substream)
goto unlock;
}
spin_lock_init(&cable->lock);
atomic_set(&cable->stop_count, 0);
init_waitqueue_head(&cable->stop_wait);
snd_refcount_init(&cable->stop_count);
cable->hw = loopback_pcm_hardware;
if (loopback->timer_source)
cable->ops = &loopback_snd_timer_ops;