ethtool: cosmetic: Use ethtool ethtool_cmd_speed API

This updates the network drivers so that they don't access the
ethtool_cmd::speed field directly, but use ethtool_cmd_speed()
instead.

For most of the drivers, these changes are purely cosmetic and don't
fix any problem, such as for those 1GbE/10GbE drivers that indirectly
call their own ethtool get_settings()/mii_ethtool_gset(). The changes
are meant to enforce code consistency and provide robustness with
future larger throughputs, at the expense of a few CPU cycles for each
ethtool operation.

All drivers compiled with make allyesconfig ion x86_64 have been
updated.

Tested: make allyesconfig on x86_64 + e1000e/bnx2x work
Signed-off-by: David Decotigny <decot@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index a6c3f8c..22ce03e 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -4606,18 +4606,17 @@
 	if (bmcr & BMCR_ANENABLE) {
 		cmd->advertising |= ADVERTISED_Autoneg;
 		cmd->autoneg = AUTONEG_ENABLE;
-		cmd->speed = ((speed == 10) ?
-			      SPEED_10 :
-			      ((speed == 1000) ?
-			       SPEED_1000 : SPEED_100));
+		ethtool_cmd_speed_set(cmd, ((speed == 10) ?
+					    SPEED_10 :
+					    ((speed == 1000) ?
+					     SPEED_1000 : SPEED_100)));
 		cmd->duplex = full_duplex ? DUPLEX_FULL : DUPLEX_HALF;
 	} else {
 		cmd->autoneg = AUTONEG_DISABLE;
-		cmd->speed =
-			(bmcr & CAS_BMCR_SPEED1000) ?
-			SPEED_1000 :
-			((bmcr & BMCR_SPEED100) ? SPEED_100:
-			 SPEED_10);
+		ethtool_cmd_speed_set(cmd, ((bmcr & CAS_BMCR_SPEED1000) ?
+					    SPEED_1000 :
+					    ((bmcr & BMCR_SPEED100) ?
+					     SPEED_100 : SPEED_10)));
 		cmd->duplex =
 			(bmcr & BMCR_FULLDPLX) ?
 			DUPLEX_FULL : DUPLEX_HALF;
@@ -4634,14 +4633,14 @@
 		 * settings that we configured.
 		 */
 		if (cp->link_cntl & BMCR_ANENABLE) {
-			cmd->speed = 0;
+			ethtool_cmd_speed_set(cmd, 0);
 			cmd->duplex = 0xff;
 		} else {
-			cmd->speed = SPEED_10;
+			ethtool_cmd_speed_set(cmd, SPEED_10);
 			if (cp->link_cntl & BMCR_SPEED100) {
-				cmd->speed = SPEED_100;
+				ethtool_cmd_speed_set(cmd, SPEED_100);
 			} else if (cp->link_cntl & CAS_BMCR_SPEED1000) {
-				cmd->speed = SPEED_1000;
+				ethtool_cmd_speed_set(cmd, SPEED_1000);
 			}
 			cmd->duplex = (cp->link_cntl & BMCR_FULLDPLX)?
 				DUPLEX_FULL : DUPLEX_HALF;