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Re: [PATCH 3.18 00/68] 3.18.52-stable review

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  Re: [PATCH 3.18 00/68] 3.18.52-stable review Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2017-05-31 21:50 +0200
    Re: [PATCH 3.18 00/68] 3.18.52-stable review Kevin Hilman <khilman@baylibre.com> - 2017-06-06 23:00 +0200

#1654587 — Re: [PATCH 3.18 00/68] 3.18.52-stable review

Hi,

On 08/05/2017 at 11:13:51 -0700, Kevin Hilman wrote:
> + relevant soc/board maintainers
> 
> kernelci.org bot <bot@kernelci.org> writes:
> 
> > stable-rc/linux-3.18.y boot: 77 boots: 2 failed, 75 passed (v3.18.51-69-gdab3331ef5e9)
> >
> > Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-3.18.y/kernel/v3.18.51-69-gdab3331ef5e9/
> > Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-3.18.y/kernel/v3.18.51-69-gdab3331ef5e9/
> >
> > Tree: stable-rc
> > Branch: linux-3.18.y
> > Git Describe: v3.18.51-69-gdab3331ef5e9
> > Git Commit: dab3331ef5e9aa7d0fa3a88776051028c2f1ed20
> > Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> > Tested: 14 unique boards, 8 SoC families, 20 builds out of 204
> >
> > Boot Failures Detected:
> >
> > arm:
> >
> >     at91_dt_defconfig
> >         at91sam9261ek: 1 failed lab
> 
> Alexandre, can you have a look at this one?
> 

Ok, I had a close look at it today. This will simply not work in 3.18,
the at91sam9261ek was fully supported using a board file and partially
supported using a device tree. The USB gadget driver will not work using
device tree on 3.18.

There are multiple solutions:
 - Stop trying to boot kernels before v4.0 using DT on at91sam9 boards
 - Add a quick fix to ioremap the matrix when using DT.
 - Backport 20 or so patches to v3.18

I would personally go for the first solution as there is probably not
much interest in v3.18 on that board.

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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#1659197

Alexandre Belloni <alexandre.belloni@free-electrons.com> writes:

> Hi,
>
> On 08/05/2017 at 11:13:51 -0700, Kevin Hilman wrote:
>> + relevant soc/board maintainers
>> 
>> kernelci.org bot <bot@kernelci.org> writes:
>> 
>> > stable-rc/linux-3.18.y boot: 77 boots: 2 failed, 75 passed (v3.18.51-69-gdab3331ef5e9)
>> >
>> > Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-3.18.y/kernel/v3.18.51-69-gdab3331ef5e9/
>> > Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-3.18.y/kernel/v3.18.51-69-gdab3331ef5e9/
>> >
>> > Tree: stable-rc
>> > Branch: linux-3.18.y
>> > Git Describe: v3.18.51-69-gdab3331ef5e9
>> > Git Commit: dab3331ef5e9aa7d0fa3a88776051028c2f1ed20
>> > Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
>> > Tested: 14 unique boards, 8 SoC families, 20 builds out of 204
>> >
>> > Boot Failures Detected:
>> >
>> > arm:
>> >
>> >     at91_dt_defconfig
>> >         at91sam9261ek: 1 failed lab
>> 
>> Alexandre, can you have a look at this one?
>> 
>
> Ok, I had a close look at it today. This will simply not work in 3.18,
> the at91sam9261ek was fully supported using a board file and partially
> supported using a device tree. The USB gadget driver will not work using
> device tree on 3.18.
>
> There are multiple solutions:
>  - Stop trying to boot kernels before v4.0 using DT on at91sam9 boards
>  - Add a quick fix to ioremap the matrix when using DT.
>  - Backport 20 or so patches to v3.18
>
> I would personally go for the first solution as there is probably not
> much interest in v3.18 on that board.

That sounds good to me.

Kevin

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