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Groups > linux.kernel > #1403286 > unrolled thread

[PATCH 1/1] drm/mediatek: do not dereference NULL

Started byHeinrich Schuchardt <xypron.glpk@gmx.de>
First post2016-05-18 23:10 +0200
Last post2016-05-23 12:40 +0200
Articles 2 — 2 participants

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  [PATCH 1/1] drm/mediatek: do not dereference NULL Heinrich Schuchardt <xypron.glpk@gmx.de> - 2016-05-18 23:10 +0200
    Re: [PATCH 1/1] drm/mediatek: do not dereference NULL Eric Engestrom <eric.engestrom@imgtec.com> - 2016-05-23 12:40 +0200

#1403286 — [PATCH 1/1] drm/mediatek: do not dereference NULL

FromHeinrich Schuchardt <xypron.glpk@gmx.de>
Date2016-05-18 23:10 +0200
Subject[PATCH 1/1] drm/mediatek: do not dereference NULL
Message-ID<rAgT7-7if-7@gated-at.bofh.it>
After having verified that dpi is NULL we should not
dereference it.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index d05ca79..3dbd00d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -433,7 +433,7 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
 	unsigned int factor;
 
 	if (!dpi) {
-		dev_err(dpi->dev, "invalid argument\n");
+		dev_err(NULL, "invalid argument\n");
 		return -EINVAL;
 	}
 
-- 
2.1.4

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#1405226

FromEric Engestrom <eric.engestrom@imgtec.com>
Date2016-05-23 12:40 +0200
Message-ID<rBVrc-4Ex-43@gated-at.bofh.it>
In reply to#1403286
On Wed, May 18, 2016 at 10:59:50PM +0200, Heinrich Schuchardt wrote:
> After having verified that dpi is NULL we should not
> dereference it.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index d05ca79..3dbd00d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -433,7 +433,7 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
>  	unsigned int factor;
>  
>  	if (!dpi) {
> -		dev_err(dpi->dev, "invalid argument\n");
> +		dev_err(NULL, "invalid argument\n");
>  		return -EINVAL;
>  	}
>  
> -- 
> 2.1.4

Seems obvious ^^
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

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