> That's bullshit. How can USB operate without interrupts ? It can't. Thus > the final suspend will not be useable for anything below a USB > controller. Among others... That means that every driver that needs to > talk to it's hardware will have to run with "interrupts off"... thus > every driver will need some kind of demoted polled mode that they don't > necessarily have. > > Thus your "final suspend" ends up only being useful for a small subset > of drivers > > Also there is nothing magic about "interrupts have been turned off". > It's no magic, it won't prevent everything from happening. How do you > make sure you weren't in the middle of driver routine already ? You > can't. Thus you need your driver to _also_ be able to recover of suspend > being called at any fucking time while it was doing something and not be > able to synchrnize with things like semaphores etc... And the total non-applicability of this model to runtime suspend of individual devices of course.. Ben.
