NAK2[J]: [PATCH 0/2][SRU][J][K][OEM-5.14][OEM-5.17] System freeze after resuming from suspend due to PCI ASPM settings

[Stefan Bader]

On 08.07.22 04:51, AceLan Kao wrote:
> Tim Gardner <tim.gardner at canonical.com> 於 2022年7月7日 週四 晚上9:06寫道：
>>
>> On 7/6/22 05:40, AceLan Kao wrote:
>>> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
>>>
>>> BugLink: https://bugs.launchpad.net/bugs/1980829
>>>
>>> [Impact]
>>> While doing some tests such as suspend/resume or CPU stress tests the system would hang.
>>>
>>> [Fix]
>>> The 2 commits fix the issue, but still not get accepted yet.
>>> https://patchwork.ozlabs.org/project/linux-pci/patch/20220705060014.10050-1-vidyas@nvidia.com/
>>> https://patchwork.ozlabs.org/project/linux-pci/patch/20220509073639.2048236-1-kai.heng.feng@canonical.com/
>>>
>>> [Test]
>>> Verified on the failed machines and ODM also verified on their side.
>>>
>>> [Where problems could occur]
>>> The 2 patches look pretty safe to me, they try to preserve the ASPM state of devices.
>>>
>>> Kai-Heng Feng (1):
>>>     PCI:ASPM: Remove pcie_aspm_pm_state_change()
>>>
>>> Vidya Sagar (1):
>>>     PCI/ASPM: Save/restore L1SS Capability for suspend/resume
>>>
>>>    drivers/pci/pci.c       | 10 +++++--
>>>    drivers/pci/pci.h       |  6 ++--
>>>    drivers/pci/pcie/aspm.c | 63 ++++++++++++++++++++++++++++-------------
>>>    3 files changed, 55 insertions(+), 24 deletions(-)
>>>
>>
>> "PCI/ASPM: Save/restore L1SS Capability for suspend/resume" has been
>> reverted in linux-next.
> The revision I submitted for SRU is v2 which was submitted to upstream
> at July 5, 2022
> The reverted one is an old patch which just has the same subject as this one.
> 

No, I cannot believe that. Patch #1 has exactly the same diffstat and from 
glancing at the exact same commit message except from a different patchworks 
reference as the patch which got applied and reverted in v5.11 development. And 
it still has not appeared on linux-next. I cannot speak for Kinectic but for 
Jammy this is not SRU material. If this gets upstream (linux-next) then please 
re-submit.

-Stefan
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