linux-kernel - [PATCH 3/8] ASoC: codecs: wcd938x: fix missing clsh ctrl error handling

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Message-Id: <20230705123018.30903-4-johan+linaro@kernel.org>
Date:   Wed,  5 Jul 2023 14:30:13 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Mark Brown <broonie@...nel.org>, Vinod Koul <vkoul@...nel.org>
Cc:     Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>, stable@...r.kernel.org
Subject: [PATCH 3/8] ASoC: codecs: wcd938x: fix missing clsh ctrl error handling

Allocation of the clash control structure may fail so add the missing
error handling to avoid dereferencing an error pointer.

Fixes: 8d78602aa87a ("ASoC: codecs: wcd938x: add basic driver")
Cc: stable@...r.kernel.org	# 5.14
Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 sound/soc/codecs/wcd938x.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c
index faa15a5ed2c8..2e342398d027 100644
--- a/sound/soc/codecs/wcd938x.c
+++ b/sound/soc/codecs/wcd938x.c
@@ -3106,6 +3106,10 @@ static int wcd938x_soc_codec_probe(struct snd_soc_component *component)
 						 WCD938X_ID_MASK);
 
 	wcd938x->clsh_info = wcd_clsh_ctrl_alloc(component, WCD938X);
+	if (IS_ERR(wcd938x->clsh_info)) {
+		pm_runtime_put(dev);
+		return PTR_ERR(wcd938x->clsh_info);
+	}
 
 	wcd938x_io_init(wcd938x);
 	/* Set all interrupts as edge triggered */
-- 
2.39.3