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authorSascha Hauer <s.hauer@pengutronix.de>2011-08-17 09:20:01 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-08-17 16:22:09 +0900
commit25b7679136fd85b1e5197e36a0ca126163e89590 (patch)
tree9b7520e60fd332a5b52047427e732c23f23dbbc6 /sound
parent0cc62e926324d4f3bd02d378baafbe73164fca35 (diff)
downloadlinux-linaro-stable-25b7679136fd85b1e5197e36a0ca126163e89590.tar.gz
ASoC: Fix check for symmetric rate enforcement
The ASoC core tries to not enforce symmetric rates when two streams open simultaneously. It does so by checking rtd->rate being zero. This works exactly once after booting because it is not set to zero again when the streams close. Fix this by setting rtd->rate when no active stream is left. [This leads to lots of warnings about not enforcing the symmetry in some situations as there's a race in the userspace API where we know we've got two applications but don't know what rates they want to set. -- broonie ] Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/soc-pcm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index b5759397afa3..2879c883eebc 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -290,6 +290,9 @@ static int soc_pcm_close(struct snd_pcm_substream *substream)
codec_dai->active--;
codec->active--;
+ if (!cpu_dai->active && !codec_dai->active)
+ rtd->rate = 0;
+
/* Muting the DAC suppresses artifacts caused during digital
* shutdown, for example from stopping clocks.
*/