NACK: [PATCH 00/12][SRU][Jammy/Unstable]Fix i915 TypeC disconnect problems for Intel ADL-P

[Timo Aaltonen]

On 26.11.2021 10.04, Andrea Righi wrote:
> On Fri, Nov 26, 2021 at 03:59:04PM +0800, Chris Chiu wrote:
>> On Fri, Nov 26, 2021 at 3:46 PM Andrea Righi <andrea.righi at canonical.com> wrote:
>>>
>>> On Thu, Nov 25, 2021 at 06:10:44PM +0800, Chris Chiu wrote:
>>>> BugLink: https://bugs.launchpad.net/bugs/1952041
>>>>
>>>> [Impact]
>>>> When the ADL-P system connects the external display via TypeC port, it will hang after unplugging the TypeC connector. The system will never come back until reboot.
>>>>
>>>> [Fix]
>>>> Intel has released a patch set to fix the TypeC PHY connect/disconnect logic. The shift for ownership of PHY and power domain will be handled correctly for ADL-P.
>>>>
>>>> [Test]
>>>> The ADL-P system will no longer freeze and the ownership will shift correctly after disconnecting the external display connects via TypeC port.
>>>>
>>>> [Where problem could occur]
>>>> It's kind of a big refactor for the i915 TypeC PHY handling logic. Don't know if there's any problems on older platforms. Targeting Jammy/Unstable and latest OEM kernel for lower risk.
>>>
>>> NACK-ing this one, because there's a v2 in the list.
>>>
>>> -Andrea
>>
>> Sorry for the confusion but the v2 is for OEM-5.14 only. This is for
>> 5.15 Jammy and Unstable which can cherry-pick the whole set from linux
>> mainline cleanly. #4 patch "[PATCH 04/12][SRU][Jammy/Unstable]
>> drm/i915/tc: Add/use helpers to retrieve TypeC port properties" is
>> slightly different from the same patch in OEM-5.14.
> 
> Oh.. so this is the right version for Jammy, right? And all the patches
> are clean upstream cherry picks.
> 
> Are we expecting to get these changes from the regular stable updates
> (will this be merged in stable/linux-5.15.y)? Or do you think it's
> unlikely to happen?

Unlikely to happen, this is too big a backport for stable at .


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