On Tue, 13 Nov 2007, Benjamin Herrenschmidt wrote: > I remember fixing various issues so that khubd would be safe when non > frozen (among other things) a while ago. Did you guys break it all > again ? Sorry, I don't know what fixes you're referring to. But come to think of it, some changes I added to the PM core a few months ago (locking every device prior to system sleep) would also make khubd and ksuspend_usbd safe, since they acquire the device lock before trying to resume anything. So I take back what I said. It's no longer true that those two USB kernel threads need to be frozen for system sleep. (I should test and make sure that really works...) But aren't there other kernel threads scattered around that still want to be frozen? For instance, drivers/misc/tifm_core.c calls create_freezeable_workqueue(). And set_freezable() gets called in lots of places. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
