qlge: Fix netdev features configuration.

qlge_fix_features() is not supposed to modify hardware or
driver state, rather it is supposed to only fix requested
fetures bits. Currently qlge_fix_features() also goes for
interface down and up unnecessarily if there is not even
any change in features set.

This patch changes/fixes following -

1) Move reload of interface or device re-config from
   qlge_fix_features() to qlge_set_features().
2) Reload of interface in qlge_set_features() only if
   relevant feature bit (NETIF_F_HW_VLAN_CTAG_RX) is changed.
3) Get rid of qlge_fix_features() since driver is not really
   required to fix any features bit.
Signed-off-by: Manish <manish.chopra@cavium.com>
Reviewed-by: Benjamin Poirier <bpoirier@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlge/qlge_main.c

@@ -2384,26 +2384,20 @@ static int qlge_update_hw_vlan_features(struct net_device *ndev,
 	return status;
 }
 
-static netdev_features_t qlge_fix_features(struct net_device *ndev,
+static int qlge_set_features(struct net_device *ndev,
 	netdev_features_t features)
 {
+	netdev_features_t changed = ndev->features ^ features;
 	int err;
 
+	if (changed & NETIF_F_HW_VLAN_CTAG_RX) {
 		/* Update the behavior of vlan accel in the adapter */
 		err = qlge_update_hw_vlan_features(ndev, features);
 		if (err)
 			return err;
 
-	return features;
-}
-
-static int qlge_set_features(struct net_device *ndev,
-	netdev_features_t features)
-{
-	netdev_features_t changed = ndev->features ^ features;
-
-	if (changed & NETIF_F_HW_VLAN_CTAG_RX)
 		qlge_vlan_mode(ndev, features);
+	}
 
 	return 0;
 }
@@ -4719,7 +4713,6 @@ static const struct net_device_ops qlge_netdev_ops = {
 	.ndo_set_mac_address	= qlge_set_mac_address,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_tx_timeout		= qlge_tx_timeout,
-	.ndo_fix_features	= qlge_fix_features,
 	.ndo_set_features	= qlge_set_features,
 	.ndo_vlan_rx_add_vid	= qlge_vlan_rx_add_vid,
 	.ndo_vlan_rx_kill_vid	= qlge_vlan_rx_kill_vid,