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ASoC: max98373: Add checks for devm_kcalloc 

As the devm_kcalloc may return NULL pointer,
it should be better to check the return value
in order to avoid NULL poineter dereference.

Fixes: 349dd23931 ("ASoC: max98373: don't access volatile registers in bias level off")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20221116082508.17418-1-jiasheng@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jiasheng Jiang 2022-11-16 16:25:08 +08:00 committed by Mark Brown
parent c7d7d4e7bb
commit 60591bbf6d
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1 changed files with 4 additions and 0 deletions
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4
sound/soc/codecs/max98373-i2c.c
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@ -549,6 +549,10 @@ static int max98373_i2c_probe(struct i2c_client *i2c)
max98373->cache = devm_kcalloc(&i2c->dev, max98373->cache_num,
sizeof(*max98373->cache),
GFP_KERNEL);
if (!max98373->cache) {
ret = -ENOMEM;
return ret;
}
for (i = 0; i < max98373->cache_num; i++)
max98373->cache[i].reg = max98373_i2c_cache_reg[i];