From: Kangjie Lu <kjlu@umn.edu>
Date: Fri, 15 Mar 2019 03:48:32 +0000 (-0500)
Subject: ASoC: rt5645: fix a NULL pointer dereference
X-Git-Tag: v5.2-rc1~16^2~9^2~54
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=51dd97d1df5fb9ac58b9b358e63e67b530f6ae21;p=tomoyo%2Ftomoyo-test1.git

ASoC: rt5645: fix a NULL pointer dereference

devm_kcalloc() may fail and return NULL. The fix returns ENOMEM
in case it fails to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 9a0751978090..f842775dbf2c 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -3419,6 +3419,9 @@ static int rt5645_probe(struct snd_soc_component *component)
 		RT5645_HWEQ_NUM, sizeof(struct rt5645_eq_param_s),
 		GFP_KERNEL);
 
+	if (!rt5645->eq_param)
+		return -ENOMEM;
+
 	return 0;
 }