linux-kernel - [PATCH] ASoC: hdaudio.c: Add missing check for devm

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Date:   Fri, 15 Sep 2023 02:13:44 +0000
From:   Chen Ni <nichen@...as.ac.cn>
To:     cezary.rojewski@...el.com, pierre-louis.bossart@...ux.intel.com,
        liam.r.girdwood@...ux.intel.com, peter.ujfalusi@...ux.intel.com,
        yung-chuan.liao@...ux.intel.com, ranjani.sridharan@...ux.intel.com,
        kai.vehmanen@...ux.intel.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, kuninori.morimoto.gx@...esas.com,
        brent.lu@...el.com, amadeuszx.slawinski@...ux.intel.com
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] ASoC: hdaudio.c: Add missing check for devm_kstrdup

Because of the potential failure of the devm_kstrdup(), the 
dl[i].codecs->name could be NULL.
Therefore, we need to check it and return -ENOMEM in order to transfer
the error.

Fixes: 97030a43371e ("ASoC: Intel: avs: Add HDAudio machine board")
Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 sound/soc/intel/avs/boards/hdaudio.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/intel/avs/boards/hdaudio.c b/sound/soc/intel/avs/boards/hdaudio.c
index cb00bc86ac94..8876558f19a1 100644
--- a/sound/soc/intel/avs/boards/hdaudio.c
+++ b/sound/soc/intel/avs/boards/hdaudio.c
@@ -55,6 +55,9 @@ static int avs_create_dai_links(struct device *dev, struct hda_codec *codec, int
 			return -ENOMEM;
 
 		dl[i].codecs->name = devm_kstrdup(dev, cname, GFP_KERNEL);
+		if (!dl[i].codecs->name)
+			return -ENOMEM;
+
 		dl[i].codecs->dai_name = pcm->name;
 		dl[i].num_codecs = 1;
 		dl[i].num_cpus = 1;
-- 
2.25.1