[PATCH] Don't oops on MTU change.

[Stephen Hemminger]

[VIA_VELOCITY]: Don't oops on MTU change.

MAINLINE: bd7b3f34198071d8bec05180530c362f1800ba46

Simple mtu change when device is down.
Fix http://bugzilla.kernel.org/show_bug.cgi?id=9382.

Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Acked-by: Jeff Mahoney <jeffm@xxxxxxxx>
CC: Oliver Pinter <oliver.pntr@xxxxxxxxx>

diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index b670b97..63a2f81 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -1798,6 +1798,11 @@ static int velocity_change_mtu(struct
net_device *dev, int new_mtu)
 		return -EINVAL;
 	}

+	if (!netif_running(dev)) {
+		dev->mtu = new_mtu;
+		return 0;
+	}
+
 	if (new_mtu != oldmtu) {
 		spin_lock_irqsave(&vptr->lock, flags);