[Intel-wired-lan] [PATCH net-next v1] i40e: Add appropriate error message logged for incorrect duplex setting

[Kamil Maziarz]

From: Alicja Kowalska <alicjax.kowalska at intel.com>

Nothing logged in dmesg for attempting to set incorrect duplex.
Add appropriate error message logged for incorrect duplex setting.

Signed-off-by: Alicja Kowalska <alicjax.kowalska at intel.com>
Signed-off-by: Kamil Maziarz <kamil.maziarz at intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 7e75706f76db..2299f13cea77 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -1287,8 +1287,10 @@ static int i40e_set_link_ksettings(struct net_device *netdev,
 	 * trying to set something that we do not support.
 	 */
 	if (memcmp(&copy_ks.base, &safe_ks.base,
-		   sizeof(struct ethtool_link_settings)))
+		   sizeof(struct ethtool_link_settings))) {
+		netdev_err(netdev, "Only speed and autoneg are supported.\n");
 		return -EOPNOTSUPP;
+	}
 
 	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
 		timeout--;
-- 
2.25.1