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authorTakashi Iwai <tiwai@suse.de>2013-07-11 17:58:25 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-07-25 14:07:25 -0700
commitc9c8dd7d3cacecd3a3f0e6e49c0a0f8f93d3d04e (patch)
tree38452ec453707cb77fc61f21f2424346d864adef
parent2bc2f7d622af45d07980a83586c95c7530e4f6cc (diff)
ALSA: ua101: Fix unlocked snd_pcm_stop() call
commit 9538aa46c2427d6782aa10036c4da4c541605e0e upstream. snd_pcm_stop() must be called in the PCM substream lock context. Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--sound/usb/misc/ua101.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c
index 6ad617b9473..76d832908fe 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,