From de7e30da243f104c83423c9f73dcd5938dbdf296 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Sat, 6 Feb 2021 21:36:55 +0100 Subject: [PATCH] ALSA: pcm: Don't call sync_stop if it hasn't been stopped commit 700cb70730777c159a988e01daa93f20a1ae9b58 upstream. The PCM stop operation sets the stop_operating flag for indicating the sync_stop post-process. This flag is, however, set unconditionally even if the PCM trigger weren't issued. This may lead to inconsistency in the driver side. Correct the code to set stop_operating flag only after the trigger STOP is actually called. Fixes: 1e850beea278 ("ALSA: pcm: Add the support for sync-stop operation") Cc: Link: https://lore.kernel.org/r/20210206203656.15959-4-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/core/pcm_native.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 4e6da58a3169..50c14cc861e6 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1421,8 +1421,10 @@ static int snd_pcm_do_stop(struct snd_pcm_substream *substream, snd_pcm_state_t state) { if (substream->runtime->trigger_master == substream && - snd_pcm_running(substream)) + snd_pcm_running(substream)) { substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); + substream->runtime->stop_operating = true; + } return 0; /* unconditonally stop all substreams */ } @@ -1435,7 +1437,6 @@ static void snd_pcm_post_stop(struct snd_pcm_substream *substream, runtime->status->state = state; snd_pcm_timer_notify(substream, SNDRV_TIMER_EVENT_MSTOP); } - runtime->stop_operating = true; wake_up(&runtime->sleep); wake_up(&runtime->tsleep); }