On Sun, 2016-09-18 at 05:39 +0200, Lukas Wunner wrote: > We currently perform a mandatory runtime resume of all PCI devices on > ->shutdown. However it is pointless to wake devices only to immediately > power them down afterwards. (Or have the firmware reset them, in case > of a reboot.) > > It seems there are only two cases when a runtime resume is actually > necessary: If the driver has declared a ->shutdown callback or if kexec > is in progress. > > Constrain resume of a device to these cases and let it slumber > otherwise, thereby conserving energy and speeding up shutdown. What happens if you get a wakeup event while going down? Will it lead to a reboot when a shutdown has been requested? Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
