The patch
ASoC: core: Make snd_soc_find_component() more robust
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark
From 5a7b2aabc1aa0393f067d9325ada96fdf67f8cb7 Mon Sep 17 00:00:00 2001
From: Mark Brown broonie@kernel.org Date: Mon, 14 Jan 2019 23:29:36 +0000 Subject: [PATCH] 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: 8780cf1142a5 ("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 --- sound/soc/soc-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index cdcc417c94ca..b680c673c553 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -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; } }