linux-kernel - [PATCH 08/17] ASoC: sti: sti_uniperif: add missing error check

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Message-Id: <20210326215927.936377-9-pierre-louis.bossart@linux.intel.com>
Date:   Fri, 26 Mar 2021 16:59:18 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     alsa-devel@...a-project.org
Cc:     tiwai@...e.de, broonie@...nel.org, linux-kernel@...r.kernel.org,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Arnaud Pouliquen <arnaud.pouliquen@...com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Subject: [PATCH 08/17] ASoC: sti: sti_uniperif: add missing error check

cppcheck warning:

sound/soc/sti/sti_uniperif.c:490:6: style: Variable 'ret' is
reassigned a value before the old one has been
used. [redundantAssignment]
 ret = devm_snd_soc_register_component(&pdev->dev,
     ^
sound/soc/sti/sti_uniperif.c:486:6: note: ret is assigned
 ret = sti_uniperiph_cpu_dai_of(node, priv);
     ^
sound/soc/sti/sti_uniperif.c:490:6: note: ret is overwritten
 ret = devm_snd_soc_register_component(&pdev->dev,
     ^

sti_uniperiph_cpu_dai_of() can return -EINVAL which seems like a
good-enough reason to bail.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
---
 sound/soc/sti/sti_uniperif.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/sti/sti_uniperif.c b/sound/soc/sti/sti_uniperif.c
index 7b9169f04d6e..67315d9b352d 100644
--- a/sound/soc/sti/sti_uniperif.c
+++ b/sound/soc/sti/sti_uniperif.c
@@ -484,6 +484,8 @@ static int sti_uniperiph_probe(struct platform_device *pdev)
 	priv->pdev = pdev;
 
 	ret = sti_uniperiph_cpu_dai_of(node, priv);
+	if (ret < 0)
+		return ret;
 
 	dev_set_drvdata(&pdev->dev, priv);
 
-- 
2.25.1