net: stmmac: make EEE depend on phy->enable_tx_lpi

Make stmmac EEE depend on phylib's evaluation of user settings and PHY
negotiation, as indicated by phy->enable_tx_lpi. This will ensure when
phylib has evaluated that the user has disabled LPI, phy_init_eee()
will not be called, and priv->eee_active will be false, causing LPI/EEE
to be disabled.

This is an interim measure - phy_init_eee() will be removed in a later
patch.

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_main.c

@@ -1083,7 +1083,7 @@ static void stmmac_mac_link_up(struct phylink_config *config,
 
 	stmmac_mac_set(priv, priv->ioaddr, true);
 	if (phy && priv->dma_cap.eee) {
-		priv->eee_active =
+		priv->eee_active = phy->enable_tx_lpi &&
 			phy_init_eee(phy, !(priv->plat->flags &
 				STMMAC_FLAG_RX_CLK_RUNS_IN_LPI)) >= 0;
 		priv->tx_lpi_timer = phy->eee_cfg.tx_lpi_timer;