Re: [PATCH v6] PCI: Avoid putting some root ports into D3 on TUXEDO Sirius Gen1
From: Krzysztof Wilczyński
Date: Wed Jan 15 2025 - 07:00:06 EST
Hello,
> commit 9d26d3a8f1b0 ("PCI: Put PCIe ports into D3 during suspend") sets the
> policy that all PCIe ports are allowed to use D3. When the system is
> suspended if the port is not power manageable by the platform and won't be
> used for wakeup via a PME this sets up the policy for these ports to go
> into D3hot.
>
> This policy generally makes sense from an OSPM perspective but it leads to
> problems with wakeup from suspend on the TUXEDO Sirius 16 Gen 1 with a
> specific old BIOS. This manifests as a system hang.
>
> On the affected Device + BIOS combination, add a quirk for the root port of
> the problematic controller to ensure that these root ports are not put into
> D3hot at suspend.
Applied to pci-fixup for v6.14, thank you!
Krzysztof