linux-kernel - Re: [PATCH 2/2] pwm: stm32: initialize raw local variables

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Date:   Fri, 18 May 2018 09:56:18 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Fabrice Gasnier <fabrice.gasnier@...com>, lee.jones@...aro.org,
        thierry.reding@...il.com
Cc:     sfr@...b.auug.org.au, gerald.baeza@...com, alexandre.torgue@...com,
        mcoquelin.stm32@...il.com, linux-next@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pwm@...r.kernel.org
Subject: Re: [PATCH 2/2] pwm: stm32: initialize raw local variables

On 05/18/2018 08:24 AM, Fabrice Gasnier wrote:
> This removes build warning when COMPILE_TEST=y and MFD_STM32_TIMERS=n
> in drivers/pwm/pwm-stm32.c. In function 'stm32_pwm_capture' 'raw_prd' and
> 'raw_dty' may be used uninitialized in this function
> [-Wmaybe-uninitialized]
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...com>

Tested-by: Randy Dunlap <rdunlap@...radead.org>

Thanks.

> ---
>  drivers/pwm/pwm-stm32.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c
> index 60bfc07..09383c6 100644
> --- a/drivers/pwm/pwm-stm32.c
> +++ b/drivers/pwm/pwm-stm32.c
> @@ -170,7 +170,7 @@ static int stm32_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm,
>  	unsigned long long prd, div, dty;
>  	unsigned long rate;
>  	unsigned int psc = 0, icpsc, scale;
> -	u32 raw_prd, raw_dty;
> +	u32 raw_prd = 0, raw_dty = 0;
>  	int ret = 0;
>  
>  	mutex_lock(&priv->lock);
> 


-- 
~Randy