From 468a272ca49cc4e2f58f3c360643c3f6d313c146 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 7 Jun 2021 17:22:25 -0500
Subject: [PATCH] ASoC: max98373-sdw: add missing memory allocation check
Git-commit: 468a272ca49cc4e2f58f3c360643c3f6d313c146
Patch-mainline: v5.14-rc1
References: git-fixes

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@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Link: https://lore.kernel.org/r/20210607222239.582139-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 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 d8c47667a9ea..e178fdb6b899 100644
--- a/sound/soc/codecs/max98373-sdw.c
+++ b/sound/soc/codecs/max98373-sdw.c
@@ -786,6 +786,8 @@ 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];
-- 
2.26.2