[alsa-devel] [PATCH] ASoC: simple-card: cpu_dai_name creates confusion when DT case

Kuninori Morimoto kuninori.morimoto.gx at gmail.com
Tue Feb 25 07:06:09 CET 2014

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

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 at renesas.com>
 sound/soc/generic/simple-card.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 2a1b1b5..4a0e06e 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -242,7 +242,8 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
 	cinfo->snd_link.name		= cinfo->name;
 	cinfo->snd_link.stream_name	= cinfo->name;
-	cinfo->snd_link.cpu_dai_name	= cinfo->cpu_dai.name;
+	if (!of_cpu)
+		cinfo->snd_link.cpu_dai_name	= cinfo->cpu_dai.name;
 	cinfo->snd_link.platform_name	= cinfo->platform;
 	cinfo->snd_link.codec_name	= cinfo->codec;
 	cinfo->snd_link.codec_dai_name	= cinfo->codec_dai.name;

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