linux-kernel - Re: [PATCH RESEND] drm/msm/dpu: Fix smatch warnings about variable dereferenced before check

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Message-ID: <iypev74zzv6l2ydzm3r5jfk6qabf45ujyhenxsyijegpcghwji@vpozmiehe65y>
Date: Sat, 31 Jan 2026 10:30:04 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: sunliming@...ux.dev
Cc: robin.clark@....qualcomm.com, lumag@...nel.org, airlied@...il.com,
        simona@...ll.ch, sean@...rly.run, marijn.suijten@...ainline.org,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        sunliming <sunliming@...inos.cn>, kernel test robot <lkp@...el.com>,
        Dan Carpenter <error27@...il.com>
Subject: Re: [PATCH RESEND] drm/msm/dpu: Fix smatch warnings about variable
 dereferenced before check

On Thu, Jan 29, 2026 at 10:49:19AM +0800, sunliming@...ux.dev wrote:
> From: sunliming <sunliming@...inos.cn>
> 
> Fix below smatch warnings:
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp_v13.c:161 dpu_hw_sspp_setup_pe_config_v13()
> warn: variable dereferenced before check 'ctx' (see line 159)
> 
> Reported-by: kernel test robot <lkp@...el.com>

Closes? (you can just reply to this email with the Closes: line and the
URL for the LKP report).

> Reported-by: Dan Carpenter <error27@...il.com>
> Closes: https://lore.kernel.org/r/202601252214.oEaY3UZM-lkp@intel.com/
> Signed-off-by: sunliming <sunliming@...inos.cn>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp_v13.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry