linux-kernel - [PATCH] ASoC: Intel: sof_sdw: Add NULL check in asoc_sdw_rt_dmic_rtd

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Message-Id: <20250415194134.292830-1-chenyuan0y@gmail.com>
Date: Tue, 15 Apr 2025 14:41:34 -0500
From: Chenyuan Yang <chenyuan0y@...il.com>
To: lgirdwood@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	yung-chuan.liao@...ux.intel.com,
	pierre-louis.bossart@...ux.dev,
	Vijendar.Mukunda@....com,
	peter.ujfalusi@...ux.intel.com,
	peterz@...radead.org,
	chao.song@...ux.intel.com
Cc: linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chenyuan Yang <chenyuan0y@...il.com>
Subject: [PATCH] ASoC: Intel: sof_sdw: Add NULL check in asoc_sdw_rt_dmic_rtd_init()

mic_name returned by devm_kasprintf() could be NULL.
Add a check for it.

Signed-off-by: Chenyuan Yang <chenyuan0y@...il.com>
Fixes: bee2fe44679f ("ASoC: Intel: sof_sdw: use generic rtd_init function for Realtek SDW DMICs")
---
 sound/soc/sdw_utils/soc_sdw_rt_dmic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/sdw_utils/soc_sdw_rt_dmic.c b/sound/soc/sdw_utils/soc_sdw_rt_dmic.c
index 46d917a99c51..97be110a59b6 100644
--- a/sound/soc/sdw_utils/soc_sdw_rt_dmic.c
+++ b/sound/soc/sdw_utils/soc_sdw_rt_dmic.c
@@ -29,6 +29,8 @@ int asoc_sdw_rt_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_da
 		mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "rt715-sdca");
 	else
 		mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s", component->name_prefix);
+	if (!mic_name)
+		return -ENOMEM;
 
 	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
 					  "%s mic:%s", card->components,
-- 
2.34.1