On Mon, Aug 26, 2019 at 9:32 PM Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> wrote: > On 26.8.2019 12.29, Rafael J. Wysocki wrote: > > I wonder if you can reproduce this with the pm-s2idle-rework branch > > from linux-pm.git merged in. > > Root cause looks similar to: > https://bugzilla.kernel.org/show_bug.cgi?id=203885 > > Mika wrote a fix for that: > https://lore.kernel.org/linux-pci/20190821124519.71594-1-mika.westerberg@xxxxxxxxxxxxxxx/ Thanks for the suggestions. Mika's patch was already applied then reverted, I applied it again but there's no change. Also merging in pm-s2idle-rework doesn't make any difference. Any other ideas? Or comments on my findings so far? Given that I can't shift D0-D3-D0 reliably directly with setpci before loading the driver, is that indicative of a fundamental problem with the platform, or is my test invalid? Or in terms of other ways of testing the power transition outside of the suspend path, if a PCI dev is runtime suspended with no driver loaded, should Linux not be attempting to put it into D3? Thanks Daniel
