linux-kernel - Re: [PATCH] drm/msm/dpu: Add missing NULL pointer check for pingpong interface

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Message-ID: <72epnkogfsguqyoefmfawqw7gr2molejceqe6rvunpcfrw3s6r@75wvtvd3btjd>
Date: Thu, 11 Dec 2025 11:57:15 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Nikolay Kuratov <kniv@...dex-team.ru>
Cc: linux-kernel@...r.kernel.org, freedreno@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Sean Paul <sean@...rly.run>, Jessica Zhang <jesszhan0024@...il.com>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Rob Clark <robin.clark@....qualcomm.com>, stable@...r.kernel.org
Subject: Re: [PATCH] drm/msm/dpu: Add missing NULL pointer check for pingpong
 interface

On Thu, Dec 11, 2025 at 12:36:30PM +0300, Nikolay Kuratov wrote:
> It is checked almost always in dpu_encoder_phys_wb_setup_ctl(), but in a
> single place the check is missing.
> Also use convenient locals instead of phys_enc->* where available.
> 
> Cc: stable@...r.kernel.org
> Fixes: d7d0e73f7de33 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
> Signed-off-by: Nikolay Kuratov <kniv@...dex-team.ru>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 

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


-- 
With best wishes
Dmitry