netdev - [PATCH net-next 9/9] net: stmmac: restart LPI timer after cleaning transmit descriptors

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Message-Id: <E1tXItg-000MBg-TW@rmk-PC.armlinux.org.uk>
Date: Mon, 13 Jan 2025 11:46:20 +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 9/9] net: stmmac: restart LPI timer after cleaning
 transmit descriptors

Fix a bug in the LPI handling, where it is possible to immediately
enter LPI mode after cleaning the transmit descriptors when all queues
are empty rather than waiting for the LPI timeout to expire.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 72f270013086..acd6994c1764 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2795,7 +2795,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue,
 	}
 
 	if (priv->eee_sw_timer_en && !priv->tx_path_in_lpi_mode)
-		stmmac_try_to_start_sw_lpi(priv);
+		stmmac_restart_sw_lpi_timer(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