On 28.05.2020 23:44, Heiner Kallweit wrote: > For whatever reason with this change (and losing ASPM control) I also > loose the PCIe PME interrupts. This prevents my network card from > resuming from runtime-suspend. > Reverting the change brings back ASPM control and the PCIe PME irq's. > > Affected system is a Zotac MiniPC with a N3450 CPU: > PCI bridge: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series PCI Express Port A #1 (rev fb) > I checked a little bit further and w/o ASPM control the root ports don't have the PME service bit set in their capabilities. Not sure whether this is a chipset bug or whether there's a better explanation. However more chipsets may have such a behavior. W/o the "default y" for ASPM control we also have the situation now that the config option description says "When in doubt, say Y." but it takes the EXPERT mode to enable it. This seems to be a little bit inconsistent. To cut a long story short: At least on some systems this change has unwanted side effects.
