On Friday, February 22, 2019 5:58:24 AM CET Bjorn Helgaas wrote: > On Mon, Feb 11, 2019 at 04:55:33PM -0600, Bjorn Helgaas wrote: > > These are to fix a couple LTR-related issues found while investigating > > https://bugzilla.kernel.org/show_bug.cgi?id=201469 > > > > I don't claim that these fix the whole problem of that bugzilla, but I > > think it's pretty clear that these are problems we need to fix, so I want > > to give these a little more exposure. > > > > Feedback welcome! > > > > --- > > > > Bjorn Helgaas (2): > > PCI/ASPM: Use LTR if already enabled by platform > > PCI/ASPM: Save LTR Capability for suspend/resume > > > > > > drivers/pci/pci.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++-- > > drivers/pci/probe.c | 36 ++++++++++++++++++++++------------- > > 2 files changed, 74 insertions(+), 15 deletions(-) > > I applied these to pci/aspm for v5.1. > > I think Vidya is absolutely right that we also need to save/restore > the ASPM L1 Substates capability. But I haven't had a chance to > write that up yet, and I think these two patches by themselves > are an improvement even without ASPM L1 SS. Agreed. Cheers, Rafael
