linux-kernel - Re: [PATCH v1] media: platform: mtk-mdp3: fix uninitialized variable in mdp_path

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Date:   Thu, 12 Oct 2023 12:03:25 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Moudy Ho <moudy.ho@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
Cc:     daoyuan huang <daoyuan.huang@...iatek.com>,
        Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v1] media: platform: mtk-mdp3: fix uninitialized variable
 in mdp_path_config()

Il 11/10/23 05:00, Moudy Ho ha scritto:
> Fix the build warnings that were detected by the linux-media
> build scripts tool:
> 
> drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c:
> 	In function 'mdp_path_config.isra':
> drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c:
> 	warning: 'ctx' may be used uninitialized [-Wmaybe-uninitialized]
>        |                    out = CFG_COMP(MT8195, ctx->param, outputs[0]);
>        |                                           ~~~^~~~~~~
> drivers/media/platform/mediatek/mdp3/mtk-img-ipi.h: note:
> 	in definition of macro 'CFG_COMP'
>        |         (IS_ERR_OR_NULL(comp) ? 0 : _CFG_COMP(plat, comp, mem))
>        |                         ^~~~
> drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c:
> 	note: 'ctx' was declared here
>        |         struct mdp_comp_ctx *ctx;
>        |
> 
> Fixes: 61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver")
> Signed-off-by: Moudy Ho <moudy.ho@...iatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>