Am Dienstag, 3. Juli 2007 schrieb Benjamin Herrenschmidt: > On Tue, 2007-07-03 at 09:44 +0200, Oliver Neukum wrote: > > Am Dienstag, 3. Juli 2007 schrieb Benjamin Herrenschmidt: > > > So to summarize, the plan that makes things work with fuse is: > > > > > > - For STR, don't do the freezer thing. > > > > > > - For STD, don't sys_sync() after you froze > > > > > > There might be -other- issues, but that should get you through some of > > > > At the risk of repeating myself. Character device drivers are written > > with the assumption that normal io and suspend/resume do not race > > with each other due to the freezer. > > What do you intend to do about that? > > Ugh ... "character devices" ... that's a pretty wide statement... > there's lots of those and very different one from the other... That is a good summary of the problem ;-( > Any sane device-driver will have to cope with being suspended in a > "live" system. I've demonstrated multiple times in the past why this is > necessary anyway, for things like dynamic power management, among > others. That is an interesting notion. I'd rather see device drivers reporting their devices idle and requsting to be suspended. But in any case it doesn't solve the problem. Regards Oliver _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
