linux-kernel - Re: [PATCH] drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets

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Date:   Mon, 20 Jul 2020 19:57:59 -0700
From:   Rob Clark <robdclark@...il.com>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     khsieh@...eaurora.org, Sean Paul <sean@...rly.run>,
        Tanmay Shah <tanmay@...eaurora.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        aravindh@...eaurora.org, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets

On Mon, Jul 20, 2020 at 4:32 PM Stephen Boyd <swboyd@...omium.org> wrote:
>
> Quoting khsieh@...eaurora.org (2020-07-20 15:48:13)
> > On 2020-07-20 13:18, Stephen Boyd wrote:
> > > Quoting Kuogee Hsieh (2020-07-07 11:41:25)
> > >>  drivers/gpu/drm/msm/dp/dp_power.c           |  32 +-
> > >>  drivers/gpu/drm/msm/dp/dp_power.h           |   1 +
> > >>  drivers/gpu/drm/msm/dp/dp_reg.h             |   1 +
> > >>  17 files changed, 861 insertions(+), 424 deletions(-)
> > >
> > > It seems to spread various changes throughout the DP bits and only has
> > > a
> > > short description about what's changing. Given that the series above
> > > isn't merged it would be better to get rid of this change and make the
> > > changes in the patches that introduce these files.
> > >
> >
> > Yes, the base DP driver is not yet merged as its still in reviews and
> > has been for a while.
> > While it is being reviewed, different developers are working on
> > different aspects of DP such as base DP driver, DP compliance, audio etc
> > to keep things going in parallel.
> > To maintain the authorship of the different developers, we prefer having
> > them as separate changes and not merge them.
> > We can make all these changes as part of the same series if that shall
> > help to keep things together but would prefer the changes themselves to
> > be separate.
> > Please consider this and let us know if that works.
> >
>
> I'm not the maintainer here so it's not really up to me, but this is why
> we have the Co-developed-by tag, to show that multiple people worked on
> some patch. The patch is supposed to logically stand on its own
> regardless of how many people worked on it. Authorship is a single
> person but the Co-developed-by tag helps express that more than one
> person is the actual author of the patch. Can you use that tag instead
> and then squash this into the other DP patches?

The dpu mega-patches are hard enough to review already.. I'd really
appreciated it if the dpu dev's sort out some way to squash later
fixups into earlier patches

BR,
-R