Messages in this thread Patch in this message |  | | | Date | Wed, 07 Dec 2011 08:11:29 -0800 | | From | Greg KH <> | | Subject | [027/104] ASoC: wm8753: Skip noop reconfiguration of DAI mode |
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3.1-stable review patch. If anyone has any objections, please let me know.
------------------ From: Timo Juhani Lindfors <timo.lindfors@iki.fi>
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>
--- sound/soc/codecs/wm8753.c | 3 +++ 1 file changed, 3 insertions(+) --- a/sound/soc/codecs/wm8753.c +++ b/sound/soc/codecs/wm8753.c @@ -189,6 +189,9 @@ static int wm8753_set_dai(struct snd_kco 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;
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