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ASoC: simple-card: cpu_dai_name creates confusion when DT case 

Basically, soc_bind_dai_link() checks
cpu_dai->dev->of_node and dai_link->cpu_of_node in DT case.
But after that it will check
cpu_dai->name and dai_link->cpu_dai_name too.

On the other hand, snd_soc_dai :: name is created by
fmt_single_name() or fmt_multiple_name().

There is no confusion if dai name is created by fmt_multiple_name(),
since cpu_dai->name is same as dai_link->cpu_dai_name.
but, if dai name is created by fmt_single_name(), CPU DAI never match.

Thus, simple-card not set dai_link->cpu_dai_name if DT case
to skip naming match on soc_bind_dai_link()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Kuninori Morimoto 2014-02-27 18:25:24 -08:00 committed by Mark Brown
parent 6ff62eedce
commit f687d900d3
1 changed files with 11 additions and 0 deletions
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11
sound/soc/generic/simple-card.c
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@ -234,6 +234,17 @@ static int asoc_simple_card_parse_of(struct device_node *node,
priv->codec_dai.fmt,
priv->codec_dai.sysclk);
/*
* soc_bind_dai_link() will check cpu name
* after of_node matching if dai_link has cpu_dai_name.
* but, it will never match if name was created by fmt_single_name()
* remove cpu_dai_name to escape name matching.
* see
* fmt_single_name()
* fmt_multiple_name()
*/
dai_link->cpu_dai_name = NULL;
return 0;
}