linux-kernel - [PATCH 4/4] ASoC: mediatek: mt6359: fix UNINIT problem

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Message-ID: <20230307040938.7484-5-trevor.wu@mediatek.com>
Date:   Tue, 7 Mar 2023 12:09:38 +0800
From:   Trevor Wu <trevor.wu@...iatek.com>
To:     <broonie@...nel.org>, <lgirdwood@...il.com>, <tiwai@...e.com>,
        <perex@...ex.cz>, <matthias.bgg@...il.com>,
        <angelogioacchino.delregno@...labora.com>
CC:     <trevor.wu@...iatek.com>, <jiaxin.yu@...iatek.com>,
        <alsa-devel@...a-project.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 4/4] ASoC: mediatek: mt6359: fix UNINIT problem

Coverity shows decaring variable reg without initializer. When
regmap_read returns an error, reg keeps the value left from earlier
computation. To prevent from the unexpected result in the case, assign
0 to reg.

Signed-off-by: Trevor Wu <trevor.wu@...iatek.com>
---
 sound/soc/codecs/mt6359.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/mt6359.c b/sound/soc/codecs/mt6359.c
index c9a453ce8a2a..cb487e63615c 100644
--- a/sound/soc/codecs/mt6359.c
+++ b/sound/soc/codecs/mt6359.c
@@ -358,7 +358,7 @@ static int mt6359_put_volsw(struct snd_kcontrol *kcontrol,
 	struct mt6359_priv *priv = snd_soc_component_get_drvdata(component);
 	struct soc_mixer_control *mc =
 			(struct soc_mixer_control *)kcontrol->private_value;
-	unsigned int reg;
+	unsigned int reg = 0;
 	int index = ucontrol->value.integer.value[0];
 	int ret;
 
-- 
2.18.0