net: stmmac: remove priv->eee_tw_timer

priv->eee_tw_timer is only assigned during initialisation to a
constant value (STMMAC_DEFAULT_TWT_LS) and then never changed.

Remove priv->eee_tw_timer, and instead use STMMAC_DEFAULT_TWT_LS
for both uses in stmmac_eee_init().

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 eee_tw_timer;
 	bool eee_sw_timer_en;
 	unsigned int mode;
 	unsigned int chain_mode;

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

@@ -464,8 +464,6 @@ static void stmmac_eee_ctrl_timer(struct timer_list *t)
  */
 static bool stmmac_eee_init(struct stmmac_priv *priv)
 {
-	int eee_tw_timer = priv->eee_tw_timer;
-
 	/* Check if MAC core supports the EEE feature. */
 	if (!priv->dma_cap.eee)
 		return false;
@@ -478,7 +476,8 @@ static bool stmmac_eee_init(struct stmmac_priv *priv)
 			netdev_dbg(priv->dev, "disable EEE\n");
 			stmmac_lpi_entry_timer_config(priv, 0);
 			del_timer_sync(&priv->eee_ctrl_timer);
-			stmmac_set_eee_timer(priv, priv->hw, 0, eee_tw_timer);
+			stmmac_set_eee_timer(priv, priv->hw, 0,
+					     STMMAC_DEFAULT_TWT_LS);
 			if (priv->hw->xpcs)
 				xpcs_config_eee(priv->hw->xpcs,
 						priv->plat->mult_fact_100ns,
@@ -491,7 +490,7 @@ static bool stmmac_eee_init(struct stmmac_priv *priv)
 	if (priv->eee_active && !priv->eee_enabled) {
 		timer_setup(&priv->eee_ctrl_timer, stmmac_eee_ctrl_timer, 0);
 		stmmac_set_eee_timer(priv, priv->hw, STMMAC_DEFAULT_LIT_LS,
-				     eee_tw_timer);
+				     STMMAC_DEFAULT_TWT_LS);
 		if (priv->hw->xpcs)
 			xpcs_config_eee(priv->hw->xpcs,
 					priv->plat->mult_fact_100ns,
@@ -3454,8 +3453,6 @@ static int stmmac_hw_setup(struct net_device *dev, bool ptp_register)
 	else if (ptp_register)
 		stmmac_ptp_register(priv);
 
-	priv->eee_tw_timer = STMMAC_DEFAULT_TWT_LS;
-
 	if (priv->use_riwt) {
 		u32 queue;