diff --git a/[refs] b/[refs]
index bb358a7c96e1..ddc5270a176a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: aa11d958d1a6572eda08214d7c6a735804fe48a5
+refs/heads/master: 5da63cc4b2258e1c06ee41637492717481025143
diff --git a/trunk/drivers/usb/gadget/f_phonet.c b/trunk/drivers/usb/gadget/f_phonet.c
index d17f1082df96..f4eff7ca0d36 100644
--- a/trunk/drivers/usb/gadget/f_phonet.c
+++ b/trunk/drivers/usb/gadget/f_phonet.c
@@ -261,20 +261,10 @@ static int pn_net_xmit(struct sk_buff *skb, struct net_device *dev)
 
 static int pn_net_mtu(struct net_device *dev, int new_mtu)
 {
-	struct phonet_port *port = netdev_priv(dev);
-	unsigned long flags;
-	int err = -EBUSY;
-
 	if ((new_mtu < PHONET_MIN_MTU) || (new_mtu > PHONET_MAX_MTU))
 		return -EINVAL;
-
-	spin_lock_irqsave(&port->lock, flags);
-	if (!netif_carrier_ok(dev)) {
-		dev->mtu = new_mtu;
-		err = 0;
-	}
-	spin_unlock_irqrestore(&port->lock, flags);
-	return err;
+	dev->mtu = new_mtu;
+	return 0;
 }
 
 static const struct net_device_ops pn_netdev_ops = {