On Mon, 7 Jan 2013, Josh Boyer wrote: > Hi, > > We've had a few reports in Fedora of users hitting the WARN_ONCE in > drivers/usb/core/urb.c that prints a warning about a usb_submit_urb > being called on an active URB. One of them[1] is from the ums_realtek > driver and the other[2] is from the uvcvideo driver. However, I noticed > that in both instances it seems the devices were coming back from what I > think is autosuspend. > > I didn't immediately find any similar reports, and to my rather > inexperienced eyes the drivers didn't seem to be doing anything clearly > wrong. I'm wondering if anyone has some possible ideas for debugging > and whether or not this might be a general issue? I don't see anything wrong either. Can you ask the users to collect a usbmon trace covering the period when the problem occurs? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
