linux-kernel - [PATCH] ASoC: codecs: Fix unsigned comparison with less than zero

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Message-Id: <20230206075518.84169-1-jiapeng.chong@linux.alibaba.com>
Date:   Mon,  6 Feb 2023 15:55:18 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     herve.codina@...tlin.com
Cc:     lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
        tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] ASoC: codecs: Fix unsigned comparison with less than zero

The val is defined as unsigned int type, if(val<0) is redundant, so
delete it.

sound/soc/codecs/idt821034.c:449 idt821034_kctrl_gain_put() warn: unsigned 'val' is never less than zero.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3947
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 sound/soc/codecs/idt821034.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/sound/soc/codecs/idt821034.c b/sound/soc/codecs/idt821034.c
index 5d01787b1c1f..2cc7b9166e69 100644
--- a/sound/soc/codecs/idt821034.c
+++ b/sound/soc/codecs/idt821034.c
@@ -446,8 +446,6 @@ static int idt821034_kctrl_gain_put(struct snd_kcontrol *kcontrol,
 	u8 ch;
 
 	val = ucontrol->value.integer.value[0];
-	if (val < 0)
-		return -EINVAL;
 	if (val > max - min)
 		return -EINVAL;
 
-- 
2.20.1.7.g153144c