net: use SPEED_UNKNOWN and DUPLEX_UNKNOWN when appropriate

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c b/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
index 6055e3e..85a3866 100644
--- a/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
+++ b/drivers/net/ethernet/ibm/ehea/ehea_ethtool.c
@@ -63,8 +63,8 @@
 		cmd->duplex = port->full_duplex == 1 ?
 						     DUPLEX_FULL : DUPLEX_HALF;
 	} else {
-		speed = ~0;
-		cmd->duplex = -1;
+		speed = SPEED_UNKNOWN;
+		cmd->duplex = DUPLEX_UNKNOWN;
 	}
 	ethtool_cmd_speed_set(cmd, speed);