On Fri, Sep 01, 2006 at 11:09:16PM -0400, Alan Stern wrote: > On Fri, 1 Sep 2006, Greg KH wrote: > > > On Wed, Aug 30, 2006 at 03:46:35PM -0400, Alan Stern wrote: > > > Greg: > > > > > > It's finally time to submit the USB autosuspend patches. > > > > > > This cover message is pretty brief, since the major points were described > > > in an earlier email: > > > > > > http://marc.theaimsgroup.com/?l=linux-usb-devel&m=115316128104011&w=2 > > > > Ok, they're in. > > I got about a dozen "This is a note to let you know that I've just added > the patch" messages in a row! :-)
Well, this was more for the rest of linux-usb-devel, which should not have gotten those messages :) > > Just one question, what about devices that are on the bus, but not > > attached to any driver? If that happens, the hub is never suspended, > > right? > > > > If that's true, should we come up with a "generic" driver (for lack of a > > better name), that binds to a device if no one else does so that it can > > kick the usage count properly? It would be kicked off whenever another > > driver wanted the device of course. > > I thought of that. Take a look at driver.c:suspend_device(). If the > device isn't bound to a driver, it gets a standard USB port suspend. > There's no corresponding code in resume_device(), so the device will > remain suspended until some driver is probed for it. > > Similarly, as long as an interface isn't bound to a driver, its usage > count will remain at 0. Hence it won't interfere with any autosuspend of > the device. Ah, ok, very nice. I'll have to try this out on my laptop now. It has a built in fingerprint reader that isn't used at all, but is connected to USB all the time. Is there a kernel message when the busses shutdown and then come back up? thanks, greg k-h ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
