f_phonet: lock-less MTU change
With the current driver, the MTU is purely indicative, so there is no
need to synchronize with the receive path.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c
index d17f108..f4eff7c 100644
--- a/drivers/usb/gadget/f_phonet.c
+++ b/drivers/usb/gadget/f_phonet.c
@@ -261,20 +261,10 @@
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 = {