Re: [PATCH v3 1/3] drm/exynos: dp: add of_graph dt binding support for panel

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Hi Javier,

2015-12-04 21:38 GMT+09:00 Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>:
> Hello Inki,
>
> On 12/04/2015 06:00 AM, Inki Dae wrote:
>> Hi Javier,
>>
>> 2015년 12월 03일 22:55에 Javier Martinez Canillas 이(가) 쓴 글:
>>> Hello Inki,
>>>
>>> I found that v2 of this patch is alredy in your exynos-drm for-next branch so
>>> so I had to revert it in linux-next to apply this one to test. You shouldn't
>>> push patches that were still not reviewed (specially the ones that weren't
>>> tested like this one) to your branch that gets pulled by -next. The idea of
>>> -next is to have some test coverage but it should be as stable as possible.
>>
>> exynos-drm/for-next branch is not really for-next branch. This branch is used
>
> Well, it is a for-next branch because is pulled by -next. It is listed in:
> http://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/Next/Trees
>
> drm-exynos      git     git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git#exynos-drm/for-next
>
>> only for integration test. As you know, there are many exynos maintainers
>> and they have their own repository. So we would need to test the integration.
>
> Integration testing is of course very needed and linux-next is for that but
> what should be tested are the patches that are targeted to mainline.
>
>> For this, exynos-drm/for-next is merged to linux-next not Dave's tree.
>> Only exynos-drm-next branch will be merged to Dave's tree so only reviewed and
>> tested patches will be merged to exynos-drm-next.
>>
>
> In that case, exynos-drm-next is what should be pulled by linux-next, no the
> for-next branch. Linux-next is a simulation of what Torvalds would do next
> so problems are found earlier, ideally before the patches land into mainline.

Seems I didn't comment enough. exynos-drm/for-next branch includes all
patches of exynos-drm-next
and actually, they keep same patches for most time but sometimes, I
merge additional patches only to
exynos-drm/for-next, which should be more tested with other trees
before going to Dave's tree.

One more thing, there is other difference between exynos-drm-next and
exynos-drm/for-next.
That is all patches of exynos-drm-next are merged on top of based on
Dave's drm-next branch.
On the other hand, all of exynos-drm/for-next are merged on top of
mainline. So if exynos-drm-next
is merged to linux-next then all patches will be conflicted with
Dave's tree because his branch
is also merged to linux-next.

I'm not sure that other maintainers always keep only the for-next
branch in their repository but
in my case, I use exynos-drm/for-next branch for the test before going
to drm-next.
Anyway, exynos-drm-next will go to Dave's tree and then Dave's tree
will also be pulled by
linux-next, which would allow exynos-drm-next to be tested altogether
again before going to mainline.

Thanks,
Inki Dae

>
> Best regards,
> --
> Javier Martinez Canillas
> Open Source Group
> Samsung Research America
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> http://lists.freedesktop.org/mailman/listinfo/dri-devel
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