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Commit 5da63cc4 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont Committed by David S. Miller
Browse files

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: default avatarRémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent aa11d958

drivers/usb/gadget/f_phonet.c

+2 −12
Original line number Diff line number Diff line
@@ -261,20 +261,10 @@ out: 


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;

	return 0;

}



static const struct net_device_ops pn_netdev_ops = {