netdev - [PATCH net-next 5/9] net: stmmac: add stmmac_try_to_start_sw

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Message-Id: <E1tXItM-000MBI-CX@rmk-PC.armlinux.org.uk>
Date: Mon, 13 Jan 2025 11:46:00 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Eric Woudstra <ericwouds@...il.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	netdev@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH net-next 5/9] net: stmmac: add stmmac_try_to_start_sw_lpi()

There are two places which call stmmac_enable_eee_mode() and follow it
immediately by modifying the expiry of priv->eee_ctrl_timer. Both code
paths are trying to enable LPI mode. Remove this duplication by
providing a function for this.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c    | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 26ff1ded4e3d..2bb61757e320 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -426,6 +426,13 @@ static int stmmac_enable_eee_mode(struct stmmac_priv *priv)
 	return 0;
 }
 
+static void stmmac_try_to_start_sw_lpi(struct stmmac_priv *priv)
+{
+	if (stmmac_enable_eee_mode(priv))
+		mod_timer(&priv->eee_ctrl_timer,
+			  STMMAC_LPI_T(priv->tx_lpi_timer));
+}
+
 /**
  * stmmac_stop_sw_lpi - stop transmitting LPI
  * @priv: driver private structure
@@ -449,8 +456,7 @@ static void stmmac_eee_ctrl_timer(struct timer_list *t)
 {
 	struct stmmac_priv *priv = from_timer(priv, t, eee_ctrl_timer);
 
-	if (stmmac_enable_eee_mode(priv))
-		mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(priv->tx_lpi_timer));
+	stmmac_try_to_start_sw_lpi(priv);
 }
 
 /**
@@ -2782,10 +2788,8 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue,
 			xmits = budget;
 	}
 
-	if (priv->eee_sw_timer_en && !priv->tx_path_in_lpi_mode) {
-		if (stmmac_enable_eee_mode(priv))
-			mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(priv->tx_lpi_timer));
-	}
+	if (priv->eee_sw_timer_en && !priv->tx_path_in_lpi_mode)
+		stmmac_try_to_start_sw_lpi(priv);
 
 	/* We still have pending packets, let's call for a new scheduling */
 	if (tx_q->dirty_tx != tx_q->cur_tx)
-- 
2.30.2