On Sun, 13 Mar 2005, Brian Murphy wrote: > Hi, > This line in the acm_probe routine > > tty_register_device(acm_tty_driver, minor, &intf->dev); > > causes the path to the tty created for each acm to be linked to > the usb interface. As long as the device is closed when it is > disconnected this is no problem but if the tty is open then the > tty deregistering is deferred. When the terminal is closed > the interface parent to the tty no longer exists and the kernel > crashes in kobject_get_path. > > The solution is to not link the two things together and replace > &intf->dev above with NULL, see the attached patch. > > I believe that someone else had the same problem a few days > ago.
Would another possibility be to call usb_get_intf() before calling tty_register_device() and usb_put_intf() when the link is no longer needed? That way the interface parent to the tty would exist for as long as needed. Alan Stern ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
