[SERIAL] Fix console initialisation ordering

Ensure pm callback is called upon initialisation to place port in
correct power saving state.  Ensure console is initialised prior
to deciding whether to power down the port.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/serial/serial_core.c

@@ -2126,6 +2126,14 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state,
 		port->ops->set_mctrl(port, 0);
 		spin_unlock_irqrestore(&port->lock, flags);
 
+		/*
+		 * If this driver supports console, and it hasn't been
+		 * successfully registered yet, try to re-register it.
+		 * It may be that the port was not available.
+		 */
+		if (port->cons && !(port->cons->flags & CON_ENABLED))
+			register_console(port->cons);
+
 		/*
 		 * Power down all ports by default, except the
 		 * console if we have one.
@@ -2286,6 +2294,7 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *port)
 	}
 
 	state->port = port;
+	state->pm_state = -1;
 
 	port->cons = drv->cons;
 	port->info = state->info;
@@ -2307,15 +2316,6 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *port)
 	 */
 	tty_register_device(drv->tty_driver, port->line, port->dev);
 
-	/*
-	 * If this driver supports console, and it hasn't been
-	 * successfully registered yet, try to re-register it.
-	 * It may be that the port was not available.
-	 */
-	if (port->type != PORT_UNKNOWN &&
-	    port->cons && !(port->cons->flags & CON_ENABLED))
-		register_console(port->cons);
-
 	/*
 	 * Ensure UPF_DEAD is not set.
 	 */