amd-xgbe-phy: Print out the auto-negotiation method used

Add a netdev_info statement detailing whether auto-negotiation was
completed through parallel detection or through the auto-negotiation
protocol.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/amd-xgbe-phy.c

@@ -857,6 +857,7 @@ static void amd_xgbe_an_state_machine(struct work_struct *work)
 	struct phy_device *phydev = priv->phydev;
 	enum amd_xgbe_phy_an cur_state;
 	int sleep;
+	unsigned int an_supported = 0;
 
 	while (1) {
 		mutex_lock(&priv->an_mutex);
@@ -866,6 +867,7 @@ static void amd_xgbe_an_state_machine(struct work_struct *work)
 		switch (priv->an_state) {
 		case AMD_XGBE_AN_START:
 			priv->an_state = amd_xgbe_an_start(phydev);
+			an_supported = 0;
 			break;
 
 		case AMD_XGBE_AN_EVENT:
@@ -874,13 +876,19 @@ static void amd_xgbe_an_state_machine(struct work_struct *work)
 
 		case AMD_XGBE_AN_PAGE_RECEIVED:
 			priv->an_state = amd_xgbe_an_page_received(phydev);
+			an_supported++;
 			break;
 
 		case AMD_XGBE_AN_INCOMPAT_LINK:
 			priv->an_state = amd_xgbe_an_incompat_link(phydev);
 			break;
 
 		case AMD_XGBE_AN_COMPLETE:
+			netdev_info(phydev->attached_dev, "%s successful\n",
+				    an_supported ? "Auto negotiation"
+						 : "Parallel detection");
+			/* fall through */
+
 		case AMD_XGBE_AN_NO_LINK:
 		case AMD_XGBE_AN_EXIT:
 			goto exit_unlock;