[PATCH 5.13 683/800] ASoC: max98373-sdw: add missing memory allocation check
From: Greg Kroah-Hartman
Date: Mon Jul 12 2021 - 04:53:30 EST
From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
[ Upstream commit 468a272ca49cc4e2f58f3c360643c3f6d313c146 ]
We forgot to test that devm_kcalloc doesn't return NULL.
Fixes: 349dd23931d1 ('ASoC: max98373: don't access volatile registers in bias level off')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@xxxxxxxxxxxxxxx>
Reviewed-by: Bard Liao <bard.liao@xxxxxxxxx>
Link: https://lore.kernel.org/r/20210607222239.582139-2-pierre-louis.bossart@xxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/codecs/max98373-sdw.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/max98373-sdw.c b/sound/soc/codecs/max98373-sdw.c
index f3a12205cd48..c7a3506046db 100644
--- a/sound/soc/codecs/max98373-sdw.c
+++ b/sound/soc/codecs/max98373-sdw.c
@@ -787,6 +787,8 @@ static int max98373_init(struct sdw_slave *slave, struct regmap *regmap)
max98373->cache = devm_kcalloc(dev, max98373->cache_num,
sizeof(*max98373->cache),
GFP_KERNEL);
+ if (!max98373->cache)
+ return -ENOMEM;
for (i = 0; i < max98373->cache_num; i++)
max98373->cache[i].reg = max98373_sdw_cache_reg[i];
--
2.30.2