On Mon, 30 Jul 2007 13:34:35 -0400 (EDT), Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > As long as you never hold the device semaphores of both the parent and > the child there shouldn't be any problem. Could this happen when a > subchannel structure is deallocated? This is indeed what happens, since we unregister the child ccw_device from the (io_)subchannel's remove function. (We used to do unregistering of the ccw_device via a workqueue (in order to avoid livelocks on a no longer existing bus semaphore), but removed it since it seemed to be needlessly complicated code.) _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
