On Thu, Jul 30, 2009 at 03:22:32PM -0400, Alan Stern wrote: > Seems likely. What happens if you suspend the UHCI controller but > leave the EHCI controller active? Then the port-switching logic should > kick in. Yeah, I'll give that a go. > Which reminds me... One of the things you had to do was enable remote > wakeup for the host controllers. The current initial state is > disabled, for a good reason. People don't like it if they suspend > their laptop only to find that the computer wakes back up again when > they unplug the USB mouse. > > If we do end up implementing runtime power management for USB host > controllers, something (a userspace program?) will have to turn off > remote wakeup before system sleeps and turn it back on afterward. I think we'll probably want a call for "transitioning from runtime suspend to system suspend", at which point the driver can clean that up itself. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
