Re: Process identical patches in different tree

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On 09/01/2020 02:53, CK Hu wrote:
> Hi, Matthias:
> 
> On Wed, 2020-01-08 at 13:05 +0100, Matthias Brugger wrote:
>> On 08/01/2020 12:14, Matthias Brugger wrote:
>>> Hi CK,
>>>
>>> On 07/01/2020 03:56, CK Hu wrote:
>>>> Hi, Dave, Daniel, Matthias:
>>>>
>>>> In mediatek-drm-next-5.6 [1], I've cherry-pick 3 patches from
>>>> v5.5-next/soc [2] because some drm patches depend on these cmdq patches.
>>>> So these cmdq patches exist in both tree now. I want to know how to
>>>> process this case. I think we could choose one of below way:
>>>>
>>>> 1. Because these cmdq patches are identical in both tree, so each tree
>>>> could do its own upstream and the there would be nothing happen when
>>>> merge.
>>>> 2. Let soc upstream first, and mediatek drm rebase on the latest
>>>> mainline then upstream.
>>>>
>>>> Which one do you prefer?
>>>>
>>>
>>> What we would need is a stable branch with this commits that get merged by both
>>> trees. If I understand correctly that otherwise the SHA of the commits would be
>>> different and that would provoke merge conflicts.
>>>
>>> We should not rely on one tree being merged before the other. AFAIK there is no
>>> hard merge order between trees.
>>>
>>
>> I prepared a branch with the patches I think are relevant for you. Please
>> confirm that this is correct, merge the tree in yours and I'll do the same for
>> v5.5-next/soc
>>
>> <paste>
>>
>> The following changes since commit e42617b825f8073569da76dc4510bfa019b1c35a:
>>
>>   Linux 5.5-rc1 (2019-12-08 14:57:55 -0800)
>>
>> are available in the Git repository at:
>>
>>   https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux.git/
>> tags/v5.5-next-cmdq-stable
>>
>> for you to fetch changes up to d412f18c9bc791d8951e903de9a68817e3098a6a:
>>
>>   soc: mediatek: cmdq: add cmdq_dev_get_client_reg function (2020-01-08 12:59:57
>> +0100)
>>
>> ----------------------------------------------------------------
>> cmdq patches needed by drm driver to use cmdq interface
>>
>> ----------------------------------------------------------------
>> Bibby Hsieh (4):
>>       soc: mediatek: cmdq: remove OR opertaion from err return
>>       soc: mediatek: cmdq: define the instruction struct
>>       soc: mediatek: cmdq: add polling function
>>       soc: mediatek: cmdq: add cmdq_dev_get_client_reg function
>>
>>  drivers/soc/mediatek/mtk-cmdq-helper.c   | 147
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------
>>  include/linux/mailbox/mtk-cmdq-mailbox.h |  11 ++++++
>>  include/linux/soc/mediatek/mtk-cmdq.h    |  53 +++++++++++++++++++++++++
>>  3 files changed, 185 insertions(+), 26 deletions(-)
>>
>> </paste>
>>
> 
> I've done in [1], is it what you expect?
> 
> [1]
> https://github.com/ckhu-mediatek/linux.git-tags/commits/mediatek-drm-next-5.6
> 

Looks good to me :)

Regards,
Matthias
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