Hi! Not sure if I'm commenting on latest version... > PM_EVENT_FREEZE -- quiesce the driver, but don't necessarily change into > any low power mode. The driver's resume() will often be called soon. > Neither wakeup events nor DMA are allowed. > > PM_EVENT_PRETHAW -- quiesce the driver, knowing that the upcoming resume() > will restore a suspend-to-disk snapshot from a different kernel image. > Drivers that are smart enough to look at their hardware state during > resume() processing need that state to be correct ... a PRETHAW could > be used to invalidate that state (by resetting the device). Other > drivers might handle this the same way as PM_EVENT_FREEZE. "Neither wakeup events nor DMA are allowed." should be added here, too. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
