On Tue, 31 Jul 2007, Rafael J. Wysocki wrote: > > There is a dependency in the USB subsystem, wherein I need an EHCI > > controller to be _resumed_ after its companion UHCI or OHCI > > controllers. This works out, thanks to the fact that manufacturers > > tend to give the EHCI controller the largest PCI function number and > > the Linux PCI core enumerates functions in numerical order. This is > > just pure luck, however, and if anything changed I'd have to add an > > explicit fix. > > That sounds really worrying to me. > > The design appears to be very fragile if such things are possible, even in > theory. It wouldn't break the entire resume; it would only prevent the USB-Persist facility from working with non-high-speed devices. So it's not quite as bad as it may seem. Still, I suppose it would be best to add a "move device A to the end of the dpm_active list" routine for use in this sort of situation. This should be easy to do. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
