Commits
Peter Hurley committed a570a49abd3
tty: Handle NULL tty->ldisc In preparation of destroying line discipline on hangup, fix ldisc core operations to properly handle when the tty's ldisc is NULL. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>