net: phylink: remove legacy mac_an_restart() method

The mac_an_restart() method is now completely unused, and has been
superseded by phylink_pcs support. Remove this method.

Since phylink_pcs_mac_an_restart() now only deals with the PCS, rename
the function to remove the _mac infix.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/phy/phylink.c

@@ -1079,17 +1079,13 @@ static void phylink_mac_config(struct phylink *pl,
 	pl->mac_ops->mac_config(pl->config, pl->cur_link_an_mode, state);
 }
 
-static void phylink_mac_pcs_an_restart(struct phylink *pl)
+static void phylink_pcs_an_restart(struct phylink *pl)
 {
-	if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
-			      pl->link_config.advertising) &&
+	if (pl->pcs && linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+					 pl->link_config.advertising) &&
 	    phy_interface_mode_is_8023z(pl->link_config.interface) &&
-	    phylink_autoneg_inband(pl->cur_link_an_mode)) {
-		if (pl->pcs)
-			pl->pcs->ops->pcs_an_restart(pl->pcs);
-		else if (pl->config->legacy_pre_march2020)
-			pl->mac_ops->mac_an_restart(pl->config);
-	}
+	    phylink_autoneg_inband(pl->cur_link_an_mode))
+		pl->pcs->ops->pcs_an_restart(pl->pcs);
 }
 
 static void phylink_major_config(struct phylink *pl, bool restart,
@@ -1169,7 +1165,7 @@ static void phylink_major_config(struct phylink *pl, bool restart,
 		restart = true;
 
 	if (restart)
-		phylink_mac_pcs_an_restart(pl);
+		phylink_pcs_an_restart(pl);
 
 	if (pl->mac_ops->mac_finish) {
 		err = pl->mac_ops->mac_finish(pl->config, pl->cur_link_an_mode,
@@ -1205,7 +1201,7 @@ static int phylink_change_inband_advert(struct phylink *pl)
 	if (!pl->pcs && pl->config->legacy_pre_march2020) {
 		/* Legacy method */
 		phylink_mac_config(pl, &pl->link_config);
-		phylink_mac_pcs_an_restart(pl);
+		phylink_pcs_an_restart(pl);
 		return 0;
 	}
 
@@ -1234,7 +1230,7 @@ static int phylink_change_inband_advert(struct phylink *pl)
 		return ret;
 
 	if (ret > 0)
-		phylink_mac_pcs_an_restart(pl);
+		phylink_pcs_an_restart(pl);
 
 	return 0;
 }
@@ -2533,7 +2529,7 @@ int phylink_ethtool_nway_reset(struct phylink *pl)
 
 	if (pl->phydev)
 		ret = phy_restart_aneg(pl->phydev);
-	phylink_mac_pcs_an_restart(pl);
+	phylink_pcs_an_restart(pl);
 
 	return ret;
 }

include/linux/phylink.h

@@ -234,7 +234,6 @@ struct phylink_config {
  * @mac_prepare: prepare for a major reconfiguration of the interface.
  * @mac_config: configure the MAC for the selected mode and state.
  * @mac_finish: finish a major reconfiguration of the interface.
- * @mac_an_restart: restart 802.3z BaseX autonegotiation.
  * @mac_link_down: take the link down.
  * @mac_link_up: allow the link to come up.
  *
@@ -254,7 +253,6 @@ struct phylink_mac_ops {
 			   const struct phylink_link_state *state);
 	int (*mac_finish)(struct phylink_config *config, unsigned int mode,
 			  phy_interface_t iface);
-	void (*mac_an_restart)(struct phylink_config *config);
 	void (*mac_link_down)(struct phylink_config *config, unsigned int mode,
 			      phy_interface_t interface);
 	void (*mac_link_up)(struct phylink_config *config,
@@ -459,16 +457,6 @@ void mac_config(struct phylink_config *config, unsigned int mode,
 int mac_finish(struct phylink_config *config, unsigned int mode,
 		phy_interface_t iface);
 
-/**
- * mac_an_restart() - restart 802.3z BaseX autonegotiation
- * @config: a pointer to a &struct phylink_config.
- *
- * Note: This is a legacy method. This function will not be called unless
- * legacy_pre_march2020 is set in &struct phylink_config and there is no
- * PCS attached.
- */
-void mac_an_restart(struct phylink_config *config);
-
 /**
  * mac_link_down() - take the link down
  * @config: a pointer to a &struct phylink_config.