Hi. On Tue, 2009-05-26 at 13:07 +0200, Oliver Neukum wrote: > Am Dienstag, 26. Mai 2009 11:19:40 schrieb Pavel Machek: > > Hello, > > > For small allocations... I still believe we should free a bit of > > memory for s2ram so that small allocations can be done without > > problems. > > Pavel > > it is essential that this work. Some subsystems, ie. USB, need to allocate > memory to do IO. For them to work, small allocations must be possible. > > Now, is this a real issue? Can most devices really save a device state? > This capability seems to me to be limited to memory mapped IO at best. > USB devices generally don't save and restore state but bring the device > into the state it ought to be in, not the state it was in during resumption. USB devices ought to be able to do _something_ though - I have a Dvico Dual Digital 4 card that is forcing me to shutdown X, mythtv-backend, pulse audio and lirc at the moment so that I can rmmod it while hibernating. That ought not be necessary. I'm sure there are good technical reasons why it is necessary at the mooment, but it shouldn't be that way - even if it just does the bare minimum required to avoid requiring the closing of files and the unload. Regards, Nigel _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
