On Fri, Dec 16, 2011 at 08:38, Oliver Neukum <oneukum@xxxxxxx> wrote: > It looks like the hangup happens on a device that is already gone. I have figured out what is causing the issue. Stay tuned for a patch, which fixes how cdc-acm deals with concurrent hangup() / close() requests. Regards, Thilo -- 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