Hi! > > If unload/reload of uvcvideo helps, it is most likely problem in that. > > > > If unload/reload of ehci_hcd is needed, it is most likely ehci problem. > > My testing shows that: > > 1. If I remove uvcvideo BEFORE suspend and reinsert it after resume, > it works. However, I cannot always rmmod uvcvideo before suspend > as it may be in use. > > 2. As a work around, removing ehci_hcd and reinserting ehci_hcd upon > resume works as well. > > 3. Since my distribution's kernels come with ehci_hcd built into the > kernel, and I cannot do #2 any more, I also found that unbinding > and rebinding the device (with the script I sent earlier on) works > as well. > > I think uvcvideo is failing to reinitialize the camera on resume, and > forcing an uvcvideo "reset" with either of these three methods kicks > uvcvideo into working again. Ok, that puts the problem firmly into uvcvideo area. Try changing its _resume routine to whatever is done on device unplug... it should be rather easy, and is quite close to "correct" solution. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
