On Fri, Feb 23, 2007 at 06:23:08PM -0800, David Brownell wrote: > On Friday 23 February 2007 5:05 pm, Alan Stern wrote: > > On Fri, 23 Feb 2007, Greg KH wrote: > > > > I have heard rumors that both Intel and mvista are starting to dig up > > > the old patches and want to get this stuff all sorted out and into the > > > main kernel tree. Hopefully something comes of it... > > Certainly I'd anticipate much more email. Previous discussions have been > inconclusive, IMO basically because they were too much in the category > of "solution in search of problem". Also, ISTR they didn't even start > to get near device-specific power management... but, maybe you're not > thinking about the patches I'm recalling!
No, I'm thinking of the same mess :) And yes, I would expect a lot of email about this too, or at least I sure hope so... > > My crystal ball is looking particularly cloudy today. Eventually > > something will have to be done, but will it be done independently by each > > subsystem? Or will there be a centralized PM core API with a > > subsystem-specific hook? I have no idea. > > If I were to bet, I'd say per-subsystem approaches will work better > than any Grand Unified/Centralized Scheme. Per-driver approaches will > also be needed. Agreed. > > So it comes down to the same question: Should I submit this USB-only > > facility for inclusion now, with the understanding that it may need to be > > changed later? > > I'd say submit it, but with a clear statement about how changeable the > interface is. Such a statement would be a kind of new ground for Linux, > which is needed ... some folk take the wrong lesson about stability of > kernel interfaces, and want all interfaces to be stable. That's not a > realistic expectation (IMO) in cases where some experimentation is needed > to reach the eventual answer. But it _is_ realistic to expect that if > an interface isn't fully cooked, it will be declared as such ... so that > userspace developers will at least know they need to communicate with the > kernel developers if they plan to make heavy use of that interface. That's what Documentation/ABI/ is there for :) thanks, greg k-h ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
