Re: Backport request for Toshiba AC100 on ARM

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On Mon, Jan 13, 2014 at 9:37 PM, Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> wrote:
> On Mon, Jan 13, 2014 at 4:23 PM, Nicolas Chauvet <kwizart@xxxxxxxxx> wrote:
>> Hello,
>>
>> I need few commits scheduled for 3.14 to be backported into 3.13 Fedora
>> kernel.
>
> As helpful as we try to be, we are not a backporting service.  If you
> would like to see something backported to a particular Fedora release
> or kernel version, the best way to do that would be to work with the
> Fedora ARM group and send patches.  Normally that means you're also
> signing up to provide the support for the patches you're submitting.
>
>> This is needed to fully support the Toshiba AC100 device on Fedora ARM.
>> I haven't found the ref for some swarren commit, but they are marked as
>> APPLIED, so they will probably hit linux-next soon.
>>
>> - Select the right RTC
>> linux-next: 553c0a200e2082686fd9b829b77f7df6ebae14e9
>>
>> - Simple-panel driver
>> linux-next: 280921de7241ee63184c8baa89ec3fe0122dedb3
>> linux-next: 210fcd9d9cf1ad6ebfae3b46b457e602c8f8cdc2
>> http://nv-tegra.nvidia.com/gitweb/?p=user/swarren/linux-2.6.git;a=commitdiff;h=265b11fec37d23ce0aa56adb8e5fc06a87a6ab47
>> http://nv-tegra.nvidia.com/gitweb/?p=user/swarren/linux-2.6.git;a=commitdiff;h=0f63b786cc8bc0dfbbb871ebf5f08fba1233ce1b
>>
>> Adds: DRM_PANEL boot and DRM_PANEL_SIMPLE tristate
>>
>
> I'm hesitant to add an entirely new driver as a backport.  Not hugely
> so, but given that it's only been in linux-next I have no idea how
> much it's been tested.
>
>> - Misc fix
>> http://nv-tegra.nvidia.com/gitweb/?p=user/swarren/linux-2.6.git;a=commitdiff;h=42a5369479562e8dd8d96ece856163cebbeb2510
>>
>> I plan to use a rawhidenodebug repo to compose a fedora 20 remix.
>> Then hopefully everything should be in for fedora 21.
>
> Is there a reason you can't wait for F21 and a 3.14 kernel then?
> We're doing something similar to what you're requesting with the
> AllWinner devices that Hans has been supporting but waiting for the
> 3.14 merge window to start.  I'd strongly suggest going that route and
> working with the ARM SIG as they're in the middle of working out their
> hardware support story.

I would prefer we wait until it lands upstream. If it was a device
which was widely available such as the BeagleBone or Wandboard I would
consider it but unfortunately the AC100 is a somewhat corner case
device which I personally don't believe is worth the pain and can be
maintained via a remix. Don't get me wrong, I would love to support
this device upstream eventually, I have one myself, but if we start
doing it for a device here and a device there we're suddenly carrying
100 patches before we know it and it's unmaintainable.

Peter
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