tty: move the termios object into the tty

This will let us sort out a whole pile of tty related races. The
alternative would be to keep points and refcount the termios objects.
However
1. They are tiny anyway
2. Many devices don't use the stored copies
3. We can remove a pty special case

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/jsm/jsm_tty.c

@@ -161,7 +161,7 @@ static void jsm_tty_send_xchar(struct uart_port *port, char ch)
 	struct ktermios *termios;
 
 	spin_lock_irqsave(&port->lock, lock_flags);
-	termios = port->state->port.tty->termios;
+	termios = &port->state->port.tty->termios;
 	if (ch == termios->c_cc[VSTART])
 		channel->ch_bd->bd_ops->send_start_character(channel);
 
@@ -250,7 +250,7 @@ static int jsm_tty_open(struct uart_port *port)
 	channel->ch_cached_lsr = 0;
 	channel->ch_stops_sent = 0;
 
-	termios = port->state->port.tty->termios;
+	termios = &port->state->port.tty->termios;
 	channel->ch_c_cflag	= termios->c_cflag;
 	channel->ch_c_iflag	= termios->c_iflag;
 	channel->ch_c_oflag	= termios->c_oflag;
@@ -283,7 +283,7 @@ static void jsm_tty_close(struct uart_port *port)
 	jsm_printk(CLOSE, INFO, &channel->ch_bd->pci_dev, "start\n");
 
 	bd = channel->ch_bd;
-	ts = port->state->port.tty->termios;
+	ts = &port->state->port.tty->termios;
 
 	channel->ch_flags &= ~(CH_STOPI);
 
@@ -567,7 +567,7 @@ void jsm_input(struct jsm_channel *ch)
 	 *input data and return immediately.
 	 */
 	if (!tp ||
-		!(tp->termios->c_cflag & CREAD) ) {
+		!(tp->termios.c_cflag & CREAD) ) {
 
 		jsm_printk(READ, INFO, &ch->ch_bd->pci_dev,
 			"input. dropping %d bytes on port %d...\n", data_len, ch->ch_portnum);