On Fri, Aug 21, 2009 at 02:33:50PM +0800, Shaohua Li wrote: > On Thu, Aug 20, 2009 at 03:40:51PM +0800, Matthew Garrett wrote: > > _L0B will only be triggered if a PME is generated, so we'll be able to > > determine which device generated the wakeup by looking at the PME > > registers. > Right, but the event is sent to a bridge. The devices under the bridge invoke > wakeup event, not the bridge itself. So you must scan all devices under the > bridge to check which device has its PME registers set. > So the bridge case isn't what you said (notification always sent to a specific > device which invokes the wakeup event) Yes, but that's fine because the PME state tells us exactly which device caused the wakeup. We'll never get a bus notification if the wakeup is triggered by UHCI on Intel. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
