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ASoC: Make rtd->codec optional 

There are some place in the ASoC core that expect rtd->codec to be non NULL
(mainly CODEC specific sysfs files). With componentization going forward
rtd->codec might be NULL in some cases. This patch prepares the core for this by
not registering CODEC specific sysfs files if rtd->codec is NULL. sysfs file
removal does not need to be conditionalized as it handles the removal of
non-existing files just fine.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Lars-Peter Clausen 2014-08-19 15:51:20 +02:00 committed by Mark Brown
parent f1d45cc3ae
commit 93c3ce76cc
1 changed files with 14 additions and 10 deletions
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24
sound/soc/soc-core.c
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@ -1261,17 +1261,21 @@ static int soc_post_component_init(struct snd_soc_pcm_runtime *rtd,
}
rtd->dev_registered = 1;
/* add DAPM sysfs entries for this codec */
ret = snd_soc_dapm_sys_add(rtd->dev);
if (ret < 0)
dev_err(rtd->dev,
"ASoC: failed to add codec dapm sysfs entries: %d\n", ret);
if (rtd->codec) {
/* add DAPM sysfs entries for this codec */
ret = snd_soc_dapm_sys_add(rtd->dev);
if (ret < 0)
dev_err(rtd->dev,
"ASoC: failed to add codec dapm sysfs entries: %d\n",
ret);
/* add codec sysfs entries */
ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
if (ret < 0)
dev_err(rtd->dev,
"ASoC: failed to add codec sysfs files: %d\n", ret);
/* add codec sysfs entries */
ret = device_create_file(rtd->dev, &dev_attr_codec_reg);
if (ret < 0)
dev_err(rtd->dev,
"ASoC: failed to add codec sysfs files: %d\n",
ret);
}
return 0;
}