On Mon, Dec 11, 2006 at 11:11:08PM -0500, Alan Stern wrote: > On Mon, 11 Dec 2006, Dominik Brodowski wrote: > > > > Yes, that's right. In fact the controller isn't supposed to send an IRQ > > > when only those two bits are on. I suspect the STS_FLR bit is somehow > > > getting set in the intr_enable register (don't ask me how -- there doesn't > > > seem to be any code that could do it). Can you modify the patch to print > > > out the value of that register as well as the value of the status > > > register? > > > > done (with only ehci-hcd being the only IRQ 10 user). > > > > case A) usb-storage device connected to "left" USB port: > > > > The flip occurs on or after IRQ status 8028 > > > > http://userweb.kernel.org/~brodo/dmesg-autosuspend-3.txt > > There's no question; that's the reason for your problem. But I wonder how > that bit ever managed to get turned on... > > I'll have to study the code some more. Which kernel did you say you are > using?
Latest Linus' git. Today's snd-usb-audio test was with head 4259cb25d436a79bf6b07d8075423573567c211d (plus an completely unrelated pcmcia patch, but the related modules didn't even load). > > case B) snd-usb-audio device connected to "right" USB port: > > > > The flip occurs on or after IRQ status 0004. > > > > > > (unfortunately, without extended USB debug messages) > > And in this example there wasn't even a suspend-resume pair to confuse > the issue, which suggests that the same thing might end up happening even > without the patch git-bisect identified. Can you try running exactly the > same test, but with that patch reverted? Actually, there _was_ a suspend and resume going on, it just didn't show up in the logs for I had CONFIG_USB_DEBUG disabled for that test accidentally. http://userweb.kernel.org/~brodo/dmesg-autosuspend-2b.txt from today confirms it, and I also ran the pre-autosuspend kernel ( its head is 8c03356a559ced6fa78931f498193f776d67e445 ) to re-check that it is an issue which appeared with the autosuspend patch. Thanks, Dominik ------------------------------------------------------------------------- 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
