linux-kernel - Re: [PATCH] mfd: ab8500-debugfs.c: Cleaning up unnecessary to test, unsigned can't be negative.

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Message-ID: <20140702065430.GB10311@lee--X1>
Date:	Wed, 2 Jul 2014 07:54:30 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mfd: ab8500-debugfs.c:  Cleaning up unnecessary to test,
 unsigned can't be negative.

> Unsigned variable can't be negative so it is unnecessary to test it
> 
> This was found using a static code analysis program called cppcheck
> 
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
> ---
>  drivers/mfd/ab8500-debugfs.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

> diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
> index d1a22aa..0793a10 100644
> --- a/drivers/mfd/ab8500-debugfs.c
> +++ b/drivers/mfd/ab8500-debugfs.c
> @@ -2504,7 +2504,7 @@ static ssize_t ab8500_gpadc_trig_timer_write(struct file *file,
>  	if (err)
>  		return err;
>  
> -	if ((user_trig_timer >= 0) && (user_trig_timer <= 255)) {
> +	if (user_trig_timer <= 255) {
>  		trig_timer = (u8) user_trig_timer;
>  	} else {
>  		dev_err(dev, "debugfs error input: "

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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