On Fri, Jul 15, 2022 at 03:40:36PM +0800, Manyi Li wrote: > Please see the details of this issus: > https://bugzilla.kernel.org/show_bug.cgi?id=216245 Hmm. The only case where changing aspm_support_enabled to false should matter is in pcie_aspm_init_link_state(), where it looks like we'll potentially rewrite some registers even if aspm_disabled is true. I think in theory we shouldn't actually modify anything as a result, and the lspcis from the bug don't show any ASPM values having changed, but I don't trust Realtek hardware in the general case so maybe it gets upset here? If the proposed patch is to just set aspm_support_enabled to false when we see the FADT bit set then I think this is fine.
