From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hongzhou Yang <hongzhou.yang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH] pinctrl: mediatek: fix handling return value of
 mtk_pmx_find_gpio_mode
Date: Thu, 11 Feb 2016 18:59:38 -0800
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To: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, Biao Huang <biao.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, "open list:PIN CONTROL SUBSYSTEM" <linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "moderated list:ARM/Mediatek SoC support" <linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>, Matthias Brugger <matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Yingjoe Chen <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>, Marek Szyprowski <m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
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On Thu, 2016-02-11 at 15:34 +0100, Andrzej Hajda wrote:
> The function can return negative values, so its result should
> be assigned to signed variable.
> 
> The problem has been detected using coccinelle semantic patch
> scripts/coccinelle/tests/assign_signed_to_unsigned.cocci.
> 
> Fixes: 59ee9c9 ('pinctrl: mediatek: Add gpio_request_enable support')
> Signed-off-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
>  drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> index cbc2204..ddc9217 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> @@ -755,7 +755,7 @@ static int mtk_pmx_gpio_request_enable(struct pinctrl_dev *pctldev,
>  				    struct pinctrl_gpio_range *range,
>  				    unsigned offset)
>  {
> -	unsigned long muxval;
> +	int muxval;
>  	struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
>  
>  	muxval = mtk_pmx_find_gpio_mode(pctl, offset);


Thank you very much.

Acked-by: Hongzhou Yang <hongzhou.yang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>

Yours,
Hongzhou