linux-kernel - [PATCH next] ASoC: cs42l43: Fix missing error code in cs42l43_codec

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Date:   Tue, 29 Aug 2023 00:36:35 -0700
From:   Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
To:     James Schulman <james.schulman@...rus.com>,
        David Rhodes <david.rhodes@...rus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        alsa-devel@...a-project.org, patches@...nsource.cirrus.com,
        linux-kernel@...r.kernel.org
Cc:     dan.carpenter@...aro.org, kernel-janitors@...r.kernel.org,
        error27@...il.com, harshit.m.mogalapalli@...cle.com
Subject: [PATCH next] ASoC: cs42l43: Fix missing error code in cs42l43_codec_probe()

When clk_get_optional() fails, the error handling code does a 'goto
err_pm' with ret = 0, which is resturning success on a failure path.

Fix this by assigning the PTR_ERR(priv->mclk) to ret variable.

Fixes: fc918cbe874e ("ASoC: cs42l43: Add support for the cs42l43")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
---
This is based on static analysis with smatch, only compile tested.
---
 sound/soc/codecs/cs42l43.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/cs42l43.c b/sound/soc/codecs/cs42l43.c
index 24e718e51174..1a95c370fc4c 100644
--- a/sound/soc/codecs/cs42l43.c
+++ b/sound/soc/codecs/cs42l43.c
@@ -2205,7 +2205,8 @@ static int cs42l43_codec_probe(struct platform_device *pdev)
 	// Don't use devm as we need to get against the MFD device
 	priv->mclk = clk_get_optional(cs42l43->dev, "mclk");
 	if (IS_ERR(priv->mclk)) {
-		dev_err_probe(priv->dev, PTR_ERR(priv->mclk), "Failed to get mclk\n");
+		ret = PTR_ERR(priv->mclk);
+		dev_err_probe(priv->dev, ret, "Failed to get mclk\n");
 		goto err_pm;
 	}
 
-- 
2.39.3