diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 1b9335796da4..3b641d115fd2 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -473,12 +473,10 @@ int tty_port_close_start(struct tty_port *port,
 {
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
-	if (tty_hung_up_p(filp)) {
-		spin_unlock_irqrestore(&port->lock, flags);
+	if (tty_hung_up_p(filp))
 		return 0;
-	}
 
+	spin_lock_irqsave(&port->lock, flags);
 	if (tty->count == 1 && port->count != 1) {
 		printk(KERN_WARNING
 		    "tty_port_close_start: tty->count = 1 port count = %d.\n",