Re: [PATCH 1/2] tty: pl011: Work around QDF2400 E44 stuck BUSY bit

From: Marc Zyngier
Date: Wed Feb 08 2017 - 10:58:55 EST


On Wed, Feb 08 2017 at 2:09:12 pm GMT, Timur Tabi <timur@xxxxxxxxxxxxxx> wrote:
> Mark Rutland wrote:
>
>>> No, only Kryo and Falkor V1 based SOCs have this problem. Falkor V2
>>> will have this fixed. We intend to revert these fixes after Falkor
>>> V1 SOCs are no longer supported.
>>
>> Supported by whom?
>
> Qualcomm.
>
>> Generally, once something's upstreamed we expect it to remain supported.
>
> The V1 SOCs are technically pre-production, but still in wide use and
> it will be a while before they are all replaced by V2 SOCs. It's only
> because of the "ugliness" of the erratum and its work-around that we
> want to git rid of it when we can.

Interesting. How will you guarantee that nobody will ever want to run a
mainline kernel on this box after a certain date? Self-destruct timer?
;-)

As someone who runs mainline on HW that exceeded its "sell-by" date by a
few decades, I'm genuinely interested.

Thanks,

M.
--
Jazz is not dead, it just smell funny.