Re: pcmcia resume 60 second hang. Re: [patch 00/69] -stable review

[Pavel Machek]

Hi!

> > As far as I can tell the PPC code simply shuts down the devices without 
> > worrying about userspace at all. If this was reliable, what prevents us 
> > from simply disabling the freezer for STR?
> 
> Personally, I think that's the right thing to do. 
> 
> And by "disabling the freezer", I think we should just not call it at all. 
> However, sadly, right now it's called from common code. I'll happily take 
> a tested patch to split that code sequence up, and try to do it in 2.6.23, 
> if somebody has the energy (I'm getting to the point where I may just do 
> it myself, but my lazy nature still hopes for a STR person to step 
> forward).

I guess we should warn the driver authors, then; and decide what
driver authors should do.

If I'm video4linux driver for grabbing screen, have been suspended,
and someone asks me to read a frame, should I

a) return -ESORRYIMSUSPENDED

b) just block the caller

?

a) seems ugly to my eyes (userspace should not know about suspend).
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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