linux-kernel - [PATCH] ASoC: codecs: fs210x: Add NULL check in fs210x_register_snd

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Message-ID: <20250905091845.1559-1-hanchunchao@inspur.com>
Date: Fri, 5 Sep 2025 17:18:44 +0800
From: Charles Han <hanchunchao@...pur.com>
To: <nick.li@...rsemi.com>, <lgirdwood@...il.com>, <broonie@...nel.org>,
	<perex@...ex.cz>, <tiwai@...e.com>
CC: <linux-sound@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Charles Han
	<hanchunchao@...pur.com>
Subject: [PATCH] ASoC: codecs: fs210x: Add NULL check in fs210x_register_snd_component

Add check for the return value of devm_kmemdup() to prevent
potential null pointer dereference.

Fixes: 756117701779 ("ASoC: codecs: Add FourSemi FS2104/5S audio amplifier driver")
Signed-off-by: Charles Han <hanchunchao@...pur.com>
---
 sound/soc/codecs/fs210x.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/fs210x.c b/sound/soc/codecs/fs210x.c
index b4f51ee7235a..e2f85714972d 100644
--- a/sound/soc/codecs/fs210x.c
+++ b/sound/soc/codecs/fs210x.c
@@ -1458,6 +1458,9 @@ static int fs210x_register_snd_component(struct fs210x_priv *fs210x)
 	dai_drv->name = devm_kasprintf(fs210x->dev,
 				       GFP_KERNEL, "%s-%d",
 				       dai_drv->name, instance_id);
+	if (!dai_drv->name)
+		return -ENOMEM;
+
 	instance_id++;
 
 	if (fs210x->devid == FS2105S_DEVICE_ID) {
-- 
2.43.0