> Anyway is the test needed at all? I.e. could > tty->ops->write/chars_in_buffer/ntty_write_room be called with > port->port.count == 0 at all? I'm not entirely sure what the Nozomi driver is trying to do. Generally any case a driver is looking at port->port.count it's a bug and should not matter with the tty krefs. However the chances are it should be testing *something* instead in this case. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html