net: stmmac: remove priv->tx_lpi_enabled

Through using phylib's EEE state, priv->tx_lpi_enabled has become a
write-only variable. Remove it.

Reviewed-by: Andrew Lunn <[email protected]>
Tested-by: Choong Yong Liang <[email protected]>
Signed-off-by: Russell King (Oracle) <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Russell King (Oracle)

drivers/net/ethernet/stmicro/stmmac/stmmac.h

@@ -308,7 +308,6 @@ struct stmmac_priv {
 	int eee_enabled;
 	int eee_active;
 	u32 tx_lpi_timer;
-	int tx_lpi_enabled;
 	int eee_tw_timer;
 	bool eee_sw_timer_en;
 	unsigned int mode;

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -968,7 +968,6 @@ static void stmmac_mac_link_down(struct phylink_config *config,
 
 	stmmac_mac_set(priv, priv->ioaddr, false);
 	priv->eee_active = false;
-	priv->tx_lpi_enabled = false;
 	priv->eee_enabled = stmmac_eee_init(priv);
 	stmmac_set_eee_pls(priv, priv->hw, false);
 
@@ -1083,7 +1082,6 @@ static void stmmac_mac_link_up(struct phylink_config *config,
 				STMMAC_FLAG_RX_CLK_RUNS_IN_LPI)) >= 0;
 		priv->tx_lpi_timer = phy->eee_cfg.tx_lpi_timer;
 		priv->eee_enabled = stmmac_eee_init(priv);
-		priv->tx_lpi_enabled = priv->eee_enabled;
 		stmmac_set_eee_pls(priv, priv->hw, true);
 	}