From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 1 Oct 2015 19:40:31 +0100
Subject: [PATCH] net: mvneta: add nway_reset support

Add ethtool nway_reset support to mvneta via phylink, so that userspace
can request the link in whatever mode to be renegotiated via
ethtool -r ethX.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -3615,6 +3615,13 @@ mvneta_ethtool_get_link_ksettings(struct
 	return phylink_ethtool_ksettings_get(pp->phylink, cmd);
 }
 
+static int mvneta_ethtool_nway_reset(struct net_device *dev)
+{
+	struct mvneta_port *pp = netdev_priv(dev);
+
+	return phylink_ethtool_nway_reset(pp->phylink);
+}
+
 /* Set interrupt coalescing for ethtools */
 static int mvneta_ethtool_set_coalesce(struct net_device *dev,
 				       struct ethtool_coalesce *c)
@@ -3888,6 +3895,7 @@ static const struct net_device_ops mvnet
 };
 
 const struct ethtool_ops mvneta_eth_tool_ops = {
+	.nway_reset	= mvneta_ethtool_nway_reset,
 	.get_link       = ethtool_op_get_link,
 	.set_coalesce   = mvneta_ethtool_set_coalesce,
 	.get_coalesce   = mvneta_ethtool_get_coalesce,