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| author | Takashi Iwai <tiwai@suse.de> | 2013-07-11 17:58:25 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-07-15 21:24:57 +0200 |
| commit | 9538aa46c2427d6782aa10036c4da4c541605e0e (patch) | |
| tree | 51a458d566f4650ddb53014190f0deb78eac4b07 /sound/usb | |
| parent | 5b9ab3f7324a1b94a5a5a76d44cf92dfeb3b5e80 (diff) | |
| download | lwn-9538aa46c2427d6782aa10036c4da4c541605e0e.tar.gz lwn-9538aa46c2427d6782aa10036c4da4c541605e0e.zip | |
ALSA: ua101: Fix unlocked snd_pcm_stop() call
snd_pcm_stop() must be called in the PCM substream lock context.
Cc: <stable@vger.kernel.org>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/misc/ua101.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index 8b5d2c564e04..509315937f25 100644 --- a/sound/usb/misc/ua101.c +++ b/sound/usb/misc/ua101.c @@ -613,14 +613,24 @@ static int start_usb_playback(struct ua101 *ua) static void abort_alsa_capture(struct ua101 *ua) { - if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states)) + unsigned long flags; + + if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states)) { + snd_pcm_stream_lock_irqsave(ua->capture.substream, flags); snd_pcm_stop(ua->capture.substream, SNDRV_PCM_STATE_XRUN); + snd_pcm_stream_unlock_irqrestore(ua->capture.substream, flags); + } } static void abort_alsa_playback(struct ua101 *ua) { - if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states)) + unsigned long flags; + + if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states)) { + snd_pcm_stream_lock_irqsave(ua->playback.substream, flags); snd_pcm_stop(ua->playback.substream, SNDRV_PCM_STATE_XRUN); + snd_pcm_stream_unlock_irqrestore(ua->playback.substream, flags); + } } static int set_stream_hw(struct ua101 *ua, struct snd_pcm_substream *substream, |