Re: [PATCH] PCI/ASPM: Add back L1 PM Substate save and restore

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On 27/06/2023 08:24, Mika Westerberg wrote:
Commit a7152be79b62 ("Revert "PCI/ASPM: Save L1 PM Substates Capability
for suspend/resume"") reverted saving and restoring of ASPM L1 Substates
due to a regression that caused resume from suspend to fail on certain
systems. However, we never added this capability back and this is now
causing systems fail to enter low power CPU states, drawing more power
from the battery.

Hello Mika,

I am sorry, but your patch (applied on top of master) triggers the exact same behaviour I described in <https://bugzilla.kernel.org/show_bug.cgi?id=216877> (nvme and wifi become unavailable during suspend/resume)

Best Regards,
Thomas



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