APPLIED [OEM-5.17] Re: [SRU] [J/K/OEM-5.19] [PATCH 0/3] Fix resume on AMD platforms when TBT monitor is plugged

[Stefan Bader]

On 27.09.22 10:12, Timo Aaltonen wrote:
> Kai-Heng Feng kirjoitti 27.9.2022 klo 9.59:
>> BugLink: https://bugs.launchpad.net/bugs/1990920
>>
>> [Impact]
>> When TBT monitor is connected to AMD platform, system resume will hit
>> stack corruption or BUG_ON() macro.
>>
>> [Fix]
>> Revert the offending commit and handle MST properly.
>>
>> [Test]
>> The system can resume normally and no more kernel splat.
>>
>> [Where problems could occur]
>> The new logic is restriced to MST hub, so normal DP/HDMI usage should be
>> unaffected.
>>
>> Kai-Heng Feng (1):
>>    Revert "drm/amd/display: Add helper for blanking all dp displays"

This was part of enabling DP tunneling. I do not see it reverted for upstream. 
If the backport was causing regressions, should it not have been handled in 
Jammy at least as a separate bug? Will this not have impact on DP tunneling?

-S

>>
>> Wayne Lin (2):
>>    drm/amd/display: Detect dpcd_rev when hotplug mst monitor
>>    drm/amd/display: Release remote dc_sink under mst scenario
>>
>>   .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |  5 +-
>>   .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 18 +----
>>   .../display/amdgpu_dm/amdgpu_dm_mst_types.c   | 72 +++++++++++++++++--
>>   drivers/gpu/drm/amd/display/dc/core/dc_link.c | 45 ------------
>>   drivers/gpu/drm/amd/display/dc/dc_link.h      |  1 -
>>   .../display/dc/dce110/dce110_hw_sequencer.c   | 13 +++-
>>   .../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 41 ++++++++++-
>>   .../drm/amd/display/dc/dcn30/dcn30_hwseq.c    | 39 +++++++++-
>>   .../drm/amd/display/dc/dcn31/dcn31_hwseq.c    | 37 +++++++++-
>>   9 files changed, 192 insertions(+), 79 deletions(-)
>>
> 
> applied to oem-5.17, thanks
> 
> (careful with the topic :)
> 

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