On Tuesday 20 January 2009, Len Brown wrote: > > > > Alan, does this look ok for you? > > > > There are a few things I don't like about it: > > > > In usb_hcd_pci_suspend, the failure path for > > pci_set_power_state doesn't undo all the changes > > that have already been made. In fact, the easiest > > way to do the rest of the recovery probably is to > > call usb_hcd_pci_resume directly. > > > > In the !has_pci_pm path we don't call pci_set_power_state. > > This means controllers with legacy power management won't > > get suspended. Maybe pci_set_power_state should be > > called always, and has_pci_pm be used only for > > interpreting the return code and printing debug messages. > > > > In usb_hcd_pci_resume, the pci_wake_from_d3 call > > should be moved up right next to the pci_enable_wake > > call. It makes no sense for them to be separated by > > pci_enable_device and pci_set_master. After all, > > even if you can't re-enable the device you probably > > don't want it to continue being a wakeup source. > > > > It's a little annoying that several debug messages > > in usb_hcd_pci_resume have been removed. Can't we > > display the power state upon entry, before trying to > > change it? > > > > It stands out that the resume method contains no call > > to match pci_set_power_state() in the suspend method. > > There should at least be a comment about it. > > > > Some of these problems predate Rafael's patch. Given that it has > > already helped a number of people, we might want to merge the patch > > and then make additional changes to address these issues. > > Rafael's patch is required for upstream to resume on my T61. > > Tested-by: Len Brown <len.brown@xxxxxxxxx> > > Perhaps Greg can apply Rafael's patch now to fix upstream ASAP, > while Alan prepares a 2nd patch to address his observations above? I'd very much appreciate doing that. My intention was only to fix the urgent issue at hand. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
