[linux-pm] Runtime device power management in userspace

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On Pá 23-12-05 10:17:45, Alan Stern wrote:
> On Fri, 23 Dec 2005, Holger Macht wrote:
> 
> > Hi,
> > 
> > We implemented device runtime power management in a userspace application
> > (the powersave daemon). In this specific case, it means to successively
> > put pci devices into D3 powersave mode with writing a numerical '3' to the
> > corresponding power state file.
> 
> > Now that we get more and more votes that this could be very dangerous and
> > problematic because of the current kernel implementation, we decided to
> > gather some more comments from involved people and experts in this
> > area. That's the aim of my post to this list. Opinions are welcome!
> 
> Remember that you're likely to run into trouble if you try to suspend a 
> device that has unsuspended children.


...network drivers should be easy targets -- we can copy suspend
handling from _close() routine. OTOH for example b44.c does
have quite different code between _close() and _suspend()...

								Pavel

-- 
Thanks, Sharp!

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