| Date | Wed, 11 Sep 2013 00:27:13 -0400 | From | Steven Rostedt <> | Subject | [006/251] ALSA: ua101: Fix unlocked snd_pcm_stop() call |
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3.6.11.9-rc1 stable review patch. If anyone has any objections, please let me know.
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From: Takashi Iwai <tiwai@suse.de>
[ Upstream commit 9538aa46c2427d6782aa10036c4da4c541605e0e ]
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> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- sound/usb/misc/ua101.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index 8b81cb5..d97d35d 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, -- 1.7.10.4
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