linux-kernel - Re: [PATCH 2/4] drm/exynos: fix comparison to bitshift when dealing with a mask

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Message-id: <5A78F17D.1010400@samsung.com>
Date:   Tue, 06 Feb 2018 09:06:21 +0900
From:   Inki Dae <inki.dae@...sung.com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        linux-kernel@...r.kernel.org
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        linux-renesas-soc@...r.kernel.org,
        Joonyoung Shim <jy0922.shim@...sung.com>,
        Seung-Woo Kim <sw0312.kim@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        David Airlie <airlied@...ux.ie>, Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH 2/4] drm/exynos: fix comparison to bitshift when dealing
 with a mask



2018년 02월 06일 05:09에 Wolfram Sang 이(가) 쓴 글:
> Due to a typo, the mask was destroyed by a comparison instead of a bit
> shift.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> ---
> Only build tested. To be applied individually per subsystem.
> 
>  drivers/gpu/drm/exynos/regs-fimc.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/exynos/regs-fimc.h b/drivers/gpu/drm/exynos/regs-fimc.h
> index 30496134a3d072..d7cbe53c4c01f4 100644
> --- a/drivers/gpu/drm/exynos/regs-fimc.h
> +++ b/drivers/gpu/drm/exynos/regs-fimc.h
> @@ -569,7 +569,7 @@
>  #define EXYNOS_CIIMGEFF_FIN_EMBOSSING		(4 << 26)
>  #define EXYNOS_CIIMGEFF_FIN_SILHOUETTE		(5 << 26)
>  #define EXYNOS_CIIMGEFF_FIN_MASK			(7 << 26)
> -#define EXYNOS_CIIMGEFF_PAT_CBCR_MASK		((0xff < 13) | (0xff < 0))
> +#define EXYNOS_CIIMGEFF_PAT_CBCR_MASK		((0xff << 13) | (0xff << 0))
>  

Oops. Picked it up.

Thanks,
Inki Dae

>  /* Real input DMA size register */
>  #define EXYNOS_CIREAL_ISIZE_AUTOLOAD_ENABLE	(1 << 31)
>