Hi, On Wed, Aug 02, 2023 at 03:10:13PM -0500, Mario Limonciello wrote: > @@ -3036,11 +3044,8 @@ bool pci_bridge_d3_possible(struct pci_dev *bridge) > if (dmi_check_system(bridge_d3_blacklist)) > return false; > > - /* > - * It should be safe to put PCIe ports from 2015 or newer > - * to D3. > - */ > - if (dmi_get_bios_year() >= 2015) > + /* the platform indicates in a device constraint that D3 is needed */ > + if (platform_constraint_d3(bridge)) This for sure causes some sort of power regression on the Intel platforms made after 2015. Why not check for the constraint and: - If present and enabled, use the desired D-state - If present and disabled, leave the device in D0 - If not present use the existing cutoff date ?
