diff options
| author | Takashi Iwai <tiwai@suse.de> | 2012-10-16 16:43:39 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-10-30 11:07:15 +0100 |
| commit | 0914f7961babbf28aaa2f19b453951fb4841c03f (patch) | |
| tree | fe5c14256a1d7b2116341300dd1e8ed94ac5f576 /sound/core/pcm_native.c | |
| parent | a0830dbd4e42b38aefdf3fb61ba5019a1a99ea85 (diff) | |
ALSA: Avoid endless sleep after disconnect
When disconnect callback is called, each component should wake up
sleepers and check card->shutdown flag for avoiding the endless sleep
blocking the proper resource release.
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/pcm_native.c')
| -rw-r--r-- | sound/core/pcm_native.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 48c6a70ad69e..6e8872de5ba0 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -1518,6 +1518,10 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream, down_read(&snd_pcm_link_rwsem); snd_pcm_stream_lock_irq(substream); remove_wait_queue(&to_check->sleep, &wait); + if (card->shutdown) { + result = -ENODEV; + break; + } if (tout == 0) { if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) result = -ESTRPIPE; @@ -2169,6 +2173,10 @@ static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) mutex_unlock(&pcm->open_mutex); schedule(); mutex_lock(&pcm->open_mutex); + if (pcm->card->shutdown) { + err = -ENODEV; + break; + } if (signal_pending(current)) { err = -ERESTARTSYS; break; |