From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit 60591bbf6d5eb44f275eb733943b7757325c1b60 ]
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: 349dd23931d1 ("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 Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/codecs/max98373-i2c.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/sound/soc/codecs/max98373-i2c.c b/sound/soc/codecs/max98373-i2c.c index ddb6436835d7..68497a4521dd 100644 --- a/sound/soc/codecs/max98373-i2c.c +++ b/sound/soc/codecs/max98373-i2c.c @@ -551,6 +551,10 @@ 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];