linux-kernel - [PATCH 4.19 094/338] ASoC: rt5663: check the return value of devm_kzalloc() in rt5663_parse

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Message-Id: <20220414110841.574385402@linuxfoundation.org>
Date:   Thu, 14 Apr 2022 15:09:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, TOTE Robot <oslab@...nghua.edu.cn>,
        Jia-Ju Bai <baijiaju1990@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 094/338] ASoC: rt5663: check the return value of devm_kzalloc() in rt5663_parse_dp()

From: Jia-Ju Bai <baijiaju1990@...il.com>

[ Upstream commit 4d06f92f38b799295ae22c98be7a20cac3e2a1a7 ]

The function devm_kzalloc() in rt5663_parse_dp() can fail, so its return
value should be checked.

Fixes: 457c25efc592 ("ASoC: rt5663: Add the function of impedance sensing")
Reported-by: TOTE Robot <oslab@...nghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@...il.com>
Link: https://lore.kernel.org/r/20220225131030.27248-1-baijiaju1990@gmail.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/codecs/rt5663.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/rt5663.c b/sound/soc/codecs/rt5663.c
index dd77f131ce6c..b92e1b6ed383 100644
--- a/sound/soc/codecs/rt5663.c
+++ b/sound/soc/codecs/rt5663.c
@@ -3463,6 +3463,8 @@ static int rt5663_parse_dp(struct rt5663_priv *rt5663, struct device *dev)
 		table_size = sizeof(struct impedance_mapping_table) *
 			rt5663->pdata.impedance_sensing_num;
 		rt5663->imp_table = devm_kzalloc(dev, table_size, GFP_KERNEL);
+		if (!rt5663->imp_table)
+			return -ENOMEM;
 		ret = device_property_read_u32_array(dev,
 			"realtek,impedance_sensing_table",
 			(u32 *)rt5663->imp_table, table_size);
-- 
2.34.1