linux-kernel - Re: [PATCH 03/18] soc: amlogic: Move power-domain drivers to the genpd dir

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Date:   Thu, 13 Jul 2023 11:50:29 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Bjorn Andersson <andersson@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Olof Johansson <olof@...om.net>, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH 03/18] soc: amlogic: Move power-domain drivers to the
 genpd dir

On Thu, 13 Jul 2023 at 02:45, Bjorn Andersson <andersson@...nel.org> wrote:
>
> On Mon, Jul 10, 2023 at 02:45:12PM +0200, Arnd Bergmann wrote:
> > On Mon, Jul 10, 2023, at 14:37, Ulf Hansson wrote:
> > > On Sun, 9 Jul 2023 at 04:21, Bjorn Andersson <andersson@...nel.org> wrote:
> > >> On Fri, Jul 07, 2023 at 05:27:39PM +0200, Ulf Hansson wrote:
> > >
> > > If I understand correctly, you are suggesting that each platform
> > > maintainer should merge the immutable branch with patch1 - and that I
> > > should send the patches (based on the immutable branch) to each of the
> > > platform maintainers to manage. Instead of one pull request with
> > > everything directly to Arnd, right?
> > >
>
> That's what I suggest, yes.
>
> > > This still means that Arnd will have to resolve the conflicts as the
> > > pull requests arrive in his inbox.
> > >
>
> Yes, we will have N maintainers modifying drivers/genpd/Makefile, all
> adding their single obj-y line. A quite trivial conflict to manage.
>
> > > Although, I guess what you are looking for is less work for the soc/
> > > maintainers, which seems reasonable. Although, in that case, I might
> > > as well share an immutable branch with the complete series, rather
> > > than just patch1. That should help Arnd too, I think.
> > >
> > > Again, let's leave the call to Arnd on what to do.
> >
> > I think it's much easier for me to pick up a single branch with
> > all of your patches. For platform maintainers, other changes can
> > go one of two ways:
> >
> > - send a normal pull requests with changes against the same
> >   files, and have me take care of any conflicts where they
> >   arise. Since most of the changes are just simple file moves
> >   rather than changing file contents, 'git mergetool' handles
> >   these fine is most cases
> >
> > - If there is a non-obvious merge, the entire genpd branch
> >   can be shared as an immutable branch, with patches for
> >   a particular platform rebased on top of that branch.
> >
>
> I already have a set of patches to these drivers in my tree for v6.6, in
> their current location.

Right.

>
> I'm afraid I am unable to see how we're going to handle the merge
> conflict you're going to create in linux-next. Perhaps you're proposing
> to just never publish Ulf's patches to linux-next?
>
> By me merging the immutable patch 1 and the qcom-patch, the conflicts
> would be minimal, and except for the genpd/Makefile entirely handled by
> me.

If you would merge the immutable branch containing the complete
series, that should work too, rather than just patch1, right?

As a heads up, I am planning to send the pull request with the v2
series tomorrow, allowing a few more acks to arrive. At that point I
will announce the immutable branch too.

Kind regards
Uffe