linux-kernel - Re: [PATCH v3 01/38] drm/msm/dp: remove cached drm

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Message-ID: <yarnaujunszlfrbduakodv7n63wjgh6og3t4qowhu3n6tz6fmn@4kb4crd5rqq7>
Date: Tue, 2 Sep 2025 12:36:20 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Yongxing Mou <yongxing.mou@....qualcomm.com>
Cc: Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 01/38] drm/msm/dp: remove cached drm_edid from panel

On Tue, Sep 02, 2025 at 04:42:18PM +0800, Yongxing Mou wrote:
> 
> 
> On 8/26/2025 12:41 AM, Dmitry Baryshkov wrote:
> > On Mon, Aug 25, 2025 at 10:15:47PM +0800, Yongxing Mou wrote:
> > > The cached drm_edid in msm_dp_panel was redundant and led to unnecessary
> > > state management complexity. This change removes the drm_edid member from
> > 
> > Please see Documentation/process/submitting-patches.rst on how to write
> > commit messages. Please use imperative language instead of describing
> > the changes.
> > 
> > THe patch LGTM.
> > 
> Thanks, will update it in next version. Since the HPD refactor series are
> unlikely to be merged soon. Can I separate out some patches from the MST
> series that don't have dependencies and send them individually to make it
> get applied? This would help reduce the number of the MST series.

Yes, of course. Please keep version number monothonic for those patches
(e.g. by telling b4 that it should start from v4).

> 
> > > the panel structure and refactors related functions to use locally read
> > > EDID data instead.
> > > 
> > > - Replaces msm_dp_panel_read_sink_caps() with msm_dp_panel_read_link_caps()
> > > - Updates msm_dp_panel_handle_sink_request() to accept drm_edid as input
> > > - Removes msm_dp_panel_get_modes() and drm_edid caching logic
> > > - Cleans up unused drm_edid_free() calls
> > > 
> > > This simplifies EDID handling and avoids stale data issues.
> > > 
> > > Signed-off-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
> > > ---
> > >   drivers/gpu/drm/msm/dp/dp_display.c | 28 +++++++++++++++-------
> > >   drivers/gpu/drm/msm/dp/dp_panel.c   | 47 ++++---------------------------------
> > >   drivers/gpu/drm/msm/dp/dp_panel.h   |  9 +++----
> > >   3 files changed, 26 insertions(+), 58 deletions(-)
> > > 
> > 
> 
> 

-- 
With best wishes
Dmitry