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| author | Timo Juhani Lindfors <timo.lindfors@iki.fi> | 2011-11-17 04:52:50 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-09 20:52:26 +0400 |
| commit | e879974c3f5bdadc691d8114a547caac768f61de (patch) | |
| tree | 9d58c91d649d0ab30bb7e79d60f19bdfb653a123 /sound/soc | |
| parent | 289c76ba6ee33daff3217881f0f4a63743ad41ab (diff) | |
| download | linux-e879974c3f5bdadc691d8114a547caac768f61de.tar.xz | |
ASoC: wm8753: Skip noop reconfiguration of DAI mode
commit 2391a0e06789a3f1718dee30b282562f7ed28c87 upstream.
This patch makes it possible to set DAI mode to its currently applied
value even if codec is active. This is necessary to allow
aplay -t raw -r 44100 -f S16_LE -c 2 < /dev/urandom &
alsactl store -f backup.state
alsactl restore -f backup.state
to work without returning errors. This patch is based on a patch sent
by Klaus Kurzmann <mok@fluxnetz.de>.
Signed-off-by: Timo Juhani Lindfors <timo.lindfors@iki.fi>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/wm8753.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c index aa091a0d8187..66d18a3e57f6 100644 --- a/sound/soc/codecs/wm8753.c +++ b/sound/soc/codecs/wm8753.c @@ -189,6 +189,9 @@ static int wm8753_set_dai(struct snd_kcontrol *kcontrol, struct wm8753_priv *wm8753 = snd_soc_codec_get_drvdata(codec); u16 ioctl; + if (wm8753->dai_func == ucontrol->value.integer.value[0]) + return 0; + if (codec->active) return -EBUSY; |