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ASoC: avoid duplicated DAI routes

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ASoC automatically creates snd_soc_dapm_dai_in and snd_soc_dapm_dai_out
widgets for DAI drivers, and adds them to the list.  Later on, ASoC
creates automatic routes between these widgets and a widget with a
stream name.

We look for a snd_soc_dapm_dai_in or snd_soc_dapm_dai_out widget, and
use this to obtain the DAI structure.  We then scan all widgets for
any with a stream name refering to either the capture or the playback
stream, and create routes.

If you have both a snd_soc_dapm_dai_in and a snd_soc_dapm_dai_out
referring to the same DAI structure, this ends up creating one set of
routes for the DAI for the snd_soc_dapm_dai_in widget, and a duplicated
set of routes for the snd_soc_dapm_dai_out widget.

Fix this by checking that the stream name for the widget matches the
DAI widget name.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Russell King 2013-08-04 20:24:03 +01:00 committed by Mark Brown
parent 57295073b6
commit 19c2c5f55e
1 changed files with 1 additions and 1 deletions
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2
sound/soc/soc-dapm.c
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@ -3551,7 +3551,7 @@ int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
break;
}
if (!w->sname)
if (!w->sname || !strstr(w->sname, dai_w->name))
continue;
if (dai->driver->playback.stream_name &&