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References: <20200827123627.538189-1-gregkh@linuxfoundation.org>
 <3d8de519-65b3-123b-8ace-e820982884e0@labbott.name> <20201016082945.GA1722359@kroah.com>
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From:   John Stultz <john.stultz@linaro.org>
Date:   Fri, 16 Oct 2020 11:34:09 -0700
Message-ID: <CALAqxLWtrnYizdDVAQMqy1JmeZ5jUCko1XKaEtAd0zoV6oj0aQ@mail.gmail.com>
Subject: Re: [PATCH] staging: ion: remove from the tree
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Laura Abbott <laura@labbott.name>,
        Sumit Semwal <sumit.semwal@linaro.org>,
        driverdevel <devel@driverdev.osuosl.org>,
        "moderated list:DMA BUFFER SHARING FRAMEWORK" 
        <linaro-mm-sig@lists.linaro.org>, Shuah Khan <shuah@kernel.org>,
        Todd Kjos <tkjos@android.com>,
        Martijn Coenen <maco@android.com>,
        lkml <linux-kernel@vger.kernel.org>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        Suren Baghdasaryan <surenb@google.com>,
        Christoph Hellwig <hch@infradead.org>,
        Joel Fernandes <joel@joelfernandes.org>,
        =?UTF-8?B?QXJ2ZSBIasO4bm5ldsOlZw==?= <arve@android.com>,
        Hridya Valsaraju <hridya@google.com>,
        Android Kernel Team <kernel-team@android.com>,
        =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>,
        Christian Brauner <christian@brauner.io>
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On Fri, Oct 16, 2020 at 1:29 AM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Thu, Aug 27, 2020 at 09:31:27AM -0400, Laura Abbott wrote:
> > On 8/27/20 8:36 AM, Greg Kroah-Hartman wrote:
> > > The ION android code has long been marked to be removed, now that we
> > > dma-buf support merged into the real part of the kernel.
> > >
> > > It was thought that we could wait to remove the ion kernel at a later
> > > time, but as the out-of-tree Android fork of the ion code has diverge=
d
> > > quite a bit, and any Android device using the ion interface uses that
> > > forked version and not this in-tree version, the in-tree copy of the
> > > code is abandonded and not used by anyone.
> > >
> > > Combine this abandoned codebase with the need to make changes to it i=
n
> > > order to keep the kernel building properly, which then causes merge
> > > issues when merging those changes into the out-of-tree Android code, =
and
> > > you end up with two different groups of people (the in-kernel-tree
> > > developers, and the Android kernel developers) who are both annoyed a=
t
> > > the current situation.  Because of this problem, just drop the in-ker=
nel
> > > copy of the ion code now, as it's not used, and is only causing probl=
ems
> > > for everyone involved.
> > >
> > > Cc: "Arve Hj=C3=B8nnev=C3=A5g" <arve@android.com>
> > > Cc: "Christian K=C3=B6nig" <christian.koenig@amd.com>
> > > Cc: Christian Brauner <christian@brauner.io>
> > > Cc: Christoph Hellwig <hch@infradead.org>
> > > Cc: Hridya Valsaraju <hridya@google.com>
> > > Cc: Joel Fernandes <joel@joelfernandes.org>
> > > Cc: John Stultz <john.stultz@linaro.org>
> > > Cc: Laura Abbott <laura@labbott.name>
> > > Cc: Martijn Coenen <maco@android.com>
> > > Cc: Shuah Khan <shuah@kernel.org>
> > > Cc: Sumit Semwal <sumit.semwal@linaro.org>
> > > Cc: Suren Baghdasaryan <surenb@google.com>
> > > Cc: Todd Kjos <tkjos@android.com>
> > > Cc: devel@driverdev.osuosl.org
> > > Cc: dri-devel@lists.freedesktop.org
> > > Cc: linaro-mm-sig@lists.linaro.org
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> >
> > We discussed this at the Android MC on Monday and the plan was to
> > remove it after the next LTS release.
>
> As 5.10 will be the next LTS release, I have now merged it to my
> "testing" branch to go into 5.11-rc1.

Sounds great! Thanks so much for waiting a bit on this, I really appreciate=
 it!
-john