Hi!

quoted

Here's a (compile tested only) patch that does this on a per-device 
basis, which is smaller, and should work just as well as your patch.

It creates a new file in the power/ directory for every device called 
"can_suspend".  Write a '0' to it to prevent that device from being 
suspended.

Does this work for you?

yeah, i was able to use this too to debug suspend/resume problems. But 
i've added the check to the resume path too - for example sw-suspend 
does a resume of devices during its suspend cycle, cutting off much of 
the netconsole output.

which makes the can_suspend flag mis-named - perhaps rename it to 
exclude_pm ?

debug_exclude_pm? I do not want people playing with it, then
complaining that they broke the suspend.
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html