linux-kernel - Re: [PATCH V1] mfd: da9053: fix compiler warning message for uninitialised variable

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Date:	Tue, 28 Jun 2016 08:03:12 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Steve Twiss <stwiss.opensource@...semi.com>
Cc:	LINUXKERNEL <linux-kernel@...r.kernel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Support Opensource <support.opensource@...semi.com>
Subject: Re: [PATCH V1] mfd: da9053: fix compiler warning message for
 uninitialised variable

On Mon, 27 Jun 2016, Steve Twiss wrote:

> From: Steve Twiss <stwiss.opensource@...semi.com>
> 
> Fix compiler warning caused by an uninitialised variable inside
> da9052_group_write() function. Defaulting the value to zero covers
> the trivial case.
> 
> Signed-off-by: Steve Twiss <stwiss.opensource@...semi.com>
> Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> 
> ---
> Hi Lee,
> 
> This compiler warning was found and reported by Geert Uytterhoeven as
> part of the "Build regressions/improvements in v4.7-rc5" thread.
> 
> - https://lkml.org/lkml/2016/6/27/126
> 
> Regards,
> Steve
> 
> 
>  include/linux/mfd/da9052/da9052.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied to -fixes.

> diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h
> index c18a4c1..ce9230a 100644
> --- a/include/linux/mfd/da9052/da9052.h
> +++ b/include/linux/mfd/da9052/da9052.h
> @@ -171,7 +171,7 @@ static inline int da9052_group_read(struct da9052 *da9052, unsigned char reg,
>  static inline int da9052_group_write(struct da9052 *da9052, unsigned char reg,
>  				      unsigned reg_cnt, unsigned char *val)
>  {
> -	int ret;
> +	int ret = 0;
>  	int i;
>  
>  	for (i = 0; i < reg_cnt; i++) {

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