tokenring: convert drivers to net_device_ops

Convert madge and proteon drivers which are really just subclasses
of tms380.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tokenring/skisa.c b/drivers/net/tokenring/skisa.c
index c0f58f0..46db5c5 100644
--- a/drivers/net/tokenring/skisa.c
+++ b/drivers/net/tokenring/skisa.c
@@ -133,6 +133,8 @@
 	return 0;
 }
 
+static struct net_device_ops sk_isa_netdev_ops __read_mostly;
+
 static int __init setup_card(struct net_device *dev, struct device *pdev)
 {
 	struct net_local *tp;
@@ -184,8 +186,7 @@
 
 	tp->tmspriv = NULL;
 
-	dev->open = sk_isa_open;
-	dev->stop = tms380tr_close;
+	dev->netdev_ops = &sk_isa_netdev_ops;
 
 	if (dev->irq == 0)
 	{
@@ -362,6 +363,10 @@
 	struct platform_device *pdev;
 	int i, num = 0, err = 0;
 
+	sk_isa_netdev_ops = tms380tr_netdev_ops;
+	sk_isa_netdev_ops.ndo_open = sk_isa_open;
+	sk_isa_netdev_ops.ndo_stop = tms380tr_close;
+
 	err = platform_driver_register(&sk_isa_driver);
 	if (err)
 		return err;