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ASoC: core: Make snd_soc_find_component() more robust 

There are some use cases where you're checking for a lot of things on a
card and it makes sense that you might end up trying to call
snd_soc_find_component() without either a name or an of_node.  Currently
in that case we try to dereference the name and crash but it's more
useful to allow the caller to just treat that as a case where we don't
find anything, that error handling will already exist.

Inspired by a patch from Ajit Pandey fixing some callers.

Fixes: 8780cf1142 ("ASoC: soc-core: defer card probe until all component is added to list")
Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mark Brown 2019-01-14 23:29:36 +00:00
parent 09ac6a817b
commit 5a7b2aabc1
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1 changed files with 1 additions and 1 deletions
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2
sound/soc/soc-core.c
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@ -742,7 +742,7 @@ static struct snd_soc_component *soc_find_component(
if (of_node) {
if (component->dev->of_node == of_node)
return component;
} else if (strcmp(component->name, name) == 0) {
} else if (name && strcmp(component->name, name) == 0) {
return component;
}
}