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@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3947
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.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

On Mon, 06 Feb 2023 15:55:18 +0800, Jiapeng Chong wrote:
> 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.
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: codecs: Fix unsigned comparison with less than zero
      commit: 05f5504b161054bdce74eef5d9ff602bbebaeca8

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

On Mon,  6 Feb 2023 15:55:18 +0800
Jiapeng Chong <jiapeng.chong@linux.alibaba.com> wrote:

> 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@linux.alibaba.com>
> Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3947
> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.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;
>  

Acked-by: Herve Codina <herve.codina@bootlin.com>

Thanks,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com