Hi! > > It's not so different from what Linus has been sketching, except > > for the actual turn-off-DMA step. (Needed because you want to get > > an atomic snapshot.) In terms of $SUBJECT the gain is that you > > actually get a debuggable suspend sequence. > > Actually, if the _only_ thing STD wants to do, why not just have a > > ->freeze(dev) > ->unfreeze(dev) > > call-in? Unfortunately, it is not the _only_ thing STD needs to do. unfreeze() must be able to reinitialize/resume the device during resume. > In other words, if you really just want to stop the devices in order to do > a memory snapshot, doing a "suspend" + "resume" is _way_way_way_ overkill, > and really really fragile because it is so much more complicated. A > simple Well, but we need that to work for s2ram anyway. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
