Re: [PATCH] pinctrl: paris: fix check on EINT_NA comparison

[Dan Carpenter]

On Tue, Sep 25, 2018 at 02:21:30PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> Currently, the check on desc->eint.eint_n == EINT_NA is always false
> because this is comparing a u16 to -1 which can never be true.  Fix
> this by casting EINT_NA to u16.
> 
> Fixes: fb5fa8dc151b ("pinctrl: mediatek: extend struct mtk_pin_desc to pinctrl-mtk-common-v2.c")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
>  drivers/pinctrl/mediatek/pinctrl-paris.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
> index 4cf0fea30b7d..77d380145dfd 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-paris.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
> @@ -729,7 +729,7 @@ static int mtk_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
>  
>  	desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset];
>  
> -	if (desc->eint.eint_n == EINT_NA)
> +	if (desc->eint.eint_n == (u16)EINT_NA)

Adding casts is ugly...  I reported this earlier and think Sean Wang is
going to send a fix for it.

regards,
dan carpenter