[PATCH] ARM: exynos_defconfig: disable CONFIG_EXYNOS5420_MCPM; not stable

[Olof Johansson]

On Mon, Nov 24, 2014 at 11:51 AM, Kevin Hilman <khilman at kernel.org> wrote:
> Kukjin,
>
> On Mon, Nov 10, 2014 at 11:35 AM, Kevin Hilman <khilman at kernel.org> wrote:
>> Kukjin Kim <kgene at kernel.org> writes:
>>
>>> Kevin Hilman wrote:
>>>>
>>>> From: Kevin Hilman <khilman at linaro.org>
>>>>
>>>> The option CONFIG_EXYNOS5420_MCPM is causing imprecise external aborts
>>>> during boot testing, causing various userspace startup failures.
>>>>
>>>> Disable until it has gotten more testing.
>>>>
>>>> Cc: Kukjin Kim <kgene.kim at samsung.com>,
>>>> Cc: Javier Martinez Canillas <javier.martinez at collabora.co.uk>,
>>>> Cc: Sachin Kamat <sachin.kamat at samsung.com>,
>>>> Cc: Doug Anderson <dianders at chromium.org>,
>>>> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>,
>>>> Cc: Krzysztof Kozlowski <k.kozlowski at samsung.com>,
>>>> Cc: Tushar Behera <tushar.behera at linaro.org>,
>>>> Cc: stable at vger.kernel.org # v3.17+
>>>> Signed-off-by: Kevin Hilman <khilman at linaro.org>
>>>> ---
>>>> This has been reported by a few people[1], but not investigated or fixed, so it's
>>>> time to disable this feature until it can be fixed.
>>>>
>>> Hi Kevin,
>>>
>>> Yeah I agree with your opinion.
>>>
>>> But as you can see my tree, I've queued regarding mcpm patches for 3.19 will
>>> be shown in -next in this weekend.
>>
>> Which of the recently queued patches are expected to address the
>> imprecise abort issue?  I'd be happy to test them out.
>
> Exynos5 MCPM is still broken in linux-next and still causing an imprecise abort.
>
> What is the status of $SUBJECT patch?
>
>>> Anyway let me apply this into -fixes and
>>> then let's enable after test its functionality in -next in a couple of days.
>>
>> Yes, I think this needs to be applied until these aborts are understood
>> and fixed.
>
> Is anyone at Samsung actually looking into these MCPM issues?

Hi Kevin,

What hardware are you having problems with? 5420 or 5422/5800?


-Olof