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Message-ID: <6e9b0113a30c2dc8fc796deff276d71d3ad224d7.camel@mediatek.com>
Date: Mon, 17 Jun 2024 01:19:39 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: "linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
	Shawn Sung (宋孝謙) <Shawn.Sung@...iatek.com>,
	Nancy Lin (林欣螢) <Nancy.Lin@...iatek.com>,
	"daniel@...ll.ch" <daniel@...ll.ch>, "p.zabel@...gutronix.de"
	<p.zabel@...gutronix.de>, "dri-devel@...ts.freedesktop.org"
	<dri-devel@...ts.freedesktop.org>, "airlied@...il.com" <airlied@...il.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "matthias.bgg@...il.com"
	<matthias.bgg@...il.com>, "angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH] drm/mediatek: Remove less-than-zero comparison of an
 unsigned value

Hi, Shawn:

On Fri, 2024-06-14 at 11:49 +0800, Shawn Sung wrote:
> From: Hsiao Chien Sung <shawn.sung@...iatek.com>
> 
> Fix a Coverity error that less-than-zero comparison of an unsigned value
> is never true.

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> 
> Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195")
> Signed-off-by: Hsiao Chien Sung <shawn.sung@...iatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_ddp_comp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
> index 17b036411292..a66e46d0b45e 100644
> --- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c
> @@ -593,7 +593,7 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp,
>  	int ret;
>  #endif
>  
> -	if (comp_id < 0 || comp_id >= DDP_COMPONENT_DRM_ID_MAX)
> +	if (comp_id >= DDP_COMPONENT_DRM_ID_MAX)
>  		return -EINVAL;
>  
>  	type = mtk_ddp_matches[comp_id].type;

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