netdev - [PATCH RFC net-next 5/5] net: stmmac: leave enabling RE and TE to stmmac_mac_link

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Message-Id: <E1tnfRy-0057SX-Lj@rmk-PC.armlinux.org.uk>
Date: Thu, 27 Feb 2025 15:05:22 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Jon Hunter <jonathanh@...dia.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Thierry Reding <treding@...dia.com>
Subject: [PATCH RFC net-next 5/5] net: stmmac: leave enabling RE and TE to
 stmmac_mac_link_up()

We only need to enable the MAC receiver and transmiter only when the
link has come up.

With commit "net: stmmac: move phylink_resume() after resume setup
is complete" we move the race between stmmac_mac_link_up() and
stmmac_hw_setup(), ensuring that stmmac_mac_link_up() happens
afterwards. This patch is a pre-requisit of this change.

Remove the unnecessary call to stmmac_mac_set(, true) in
stmmac_hw_setup().

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index e47b702fb9f9..c80952349eb7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3506,9 +3506,6 @@ static int stmmac_hw_setup(struct net_device *dev, bool ptp_register)
 		priv->hw->rx_csum = 0;
 	}
 
-	/* Enable the MAC Rx/Tx */
-	stmmac_mac_set(priv, priv->ioaddr, true);
-
 	/* Set the HW DMA mode and the COE */
 	stmmac_dma_operation_mode(priv);
 
-- 
2.30.2