counts The module which called allocate_tty_driver is already refcounted by the TTY layer automatically. And since THIS_MODULE is isdn_tty and it allocated the tty_driver, there is no need to do the counts in isdn's tty->ops->open/close. Signed-off-by: Jiri Slaby Cc: Karsten Keil Signed-off-by: Greg Kroah-Hartman Û˜ÙÛã