Re: [PATCH] pinctrl: mediatek: fix handling return value of mtk_pmx_find_gpio_mode

[Hongzhou Yang <hongzhou.yang@xxxxxxxxxxxx>]

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@xxxxxxxxxxx>
> ---
>  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@xxxxxxxxxxxx>

Yours,
Hongzhou

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