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>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/phy/amd-xgbe-phy.c b/drivers/net/phy/amd-xgbe-phy.c
index 39428e5a1700..388e3029165a 100644
--- a/drivers/net/phy/amd-xgbe-phy.c
+++ b/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:
@@ -874,6 +876,7 @@ 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:
@@ -881,6 +884,11 @@ static void amd_xgbe_an_state_machine(struct work_struct *work)
                         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;