aboutsummaryrefslogtreecommitdiffstats
path: root/sound/usb
diff options
context:
space:
mode:
authorMark Hills <mark@pogo.org.uk>2009-10-24 07:59:36 -0400
committerTakashi Iwai <tiwai@suse.de>2009-10-30 07:29:42 -0400
commitac9dd9d384b018f1e1c5a9a2686ab5605ce55818 (patch)
tree4fad8ff7d5702231f0e01a4bd568d26b934223a1 /sound/usb
parent3702b082281929cf1bdf14f67eb0619aab58b496 (diff)
ALSA: snd-usb-caiaq: Lock on stream start/unpause
Fix a bug which can result in white noise from the driver after stream start or unpause. Signed-off-by: Mark Hills <mark@pogo.org.uk> Acked-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/caiaq/audio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index e76017cd5acf..86b2c3b92df5 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -62,10 +62,14 @@ static void
62activate_substream(struct snd_usb_caiaqdev *dev, 62activate_substream(struct snd_usb_caiaqdev *dev,
63 struct snd_pcm_substream *sub) 63 struct snd_pcm_substream *sub)
64{ 64{
65 spin_lock(&dev->spinlock);
66
65 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) 67 if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
66 dev->sub_playback[sub->number] = sub; 68 dev->sub_playback[sub->number] = sub;
67 else 69 else
68 dev->sub_capture[sub->number] = sub; 70 dev->sub_capture[sub->number] = sub;
71
72 spin_unlock(&dev->spinlock);
69} 73}
70 74
71static void 75static void