netdev - [PATCH net-next 04/14] net: stmmac: wrap phylink's rx_clk

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Message-Id: <E1vg4vx-00000003SFz-1ldy@rmk-PC.armlinux.org.uk>
Date: Wed, 14 Jan 2026 17:45:29 +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>,
	Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-arm-msm@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Mohd Ayaan Anwar <mohd.anwar@....qualcomm.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Vinod Koul <vkoul@...nel.org>
Subject: [PATCH net-next 04/14] net: stmmac: wrap phylink's rx_clk_stop
 functions

With generic SerDes support, stmmac will need to do more work to ensure
that clk_rx_i is running in all configurations. Rather than turn each
site that calls phylink_rx_clk_stop_xxx() into a list of functions,
move these to their own pair of functions so that they can be
augmented at a single location.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 32 ++++++++++++-------
 1 file changed, 21 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c2589f02ff7e..24a2555ca329 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3547,6 +3547,16 @@ static void stmmac_safety_feat_configuration(struct stmmac_priv *priv)
 	}
 }
 
+static void stmmac_clk_rx_i_require(struct stmmac_priv *priv)
+{
+	phylink_rx_clk_stop_block(priv->phylink);
+}
+
+static void stmmac_clk_rx_i_release(struct stmmac_priv *priv)
+{
+	phylink_rx_clk_stop_unblock(priv->phylink);
+}
+
 /**
  * stmmac_hw_setup - setup mac in a usable state.
  *  @dev : pointer to the device structure.
@@ -3578,12 +3588,12 @@ static int stmmac_hw_setup(struct net_device *dev)
 	 * Block the receive clock stop for LPI mode at the PHY in case
 	 * the link is established with EEE mode active.
 	 */
-	phylink_rx_clk_stop_block(priv->phylink);
+	stmmac_clk_rx_i_require(priv);
 
 	/* DMA initialization and SW reset */
 	ret = stmmac_init_dma_engine(priv);
 	if (ret < 0) {
-		phylink_rx_clk_stop_unblock(priv->phylink);
+		stmmac_clk_rx_i_release(priv);
 		netdev_err(priv->dev, "%s: DMA engine initialization failed\n",
 			   __func__);
 		return ret;
@@ -3591,7 +3601,7 @@ static int stmmac_hw_setup(struct net_device *dev)
 
 	/* Copy the MAC addr into the HW  */
 	stmmac_set_umac_addr(priv, priv->hw, dev->dev_addr, 0);
-	phylink_rx_clk_stop_unblock(priv->phylink);
+	stmmac_clk_rx_i_release(priv);
 
 	/* Initialize the MAC Core */
 	stmmac_core_init(priv, priv->hw, dev);
@@ -3670,9 +3680,9 @@ static int stmmac_hw_setup(struct net_device *dev)
 	/* Start the ball rolling... */
 	stmmac_start_all_dma(priv);
 
-	phylink_rx_clk_stop_block(priv->phylink);
+	stmmac_clk_rx_i_require(priv);
 	stmmac_set_hw_vlan_mode(priv, priv->hw);
-	phylink_rx_clk_stop_unblock(priv->phylink);
+	stmmac_clk_rx_i_release(priv);
 
 	return 0;
 }
@@ -6107,9 +6117,9 @@ static int stmmac_set_features(struct net_device *netdev,
 	else
 		priv->hw->hw_vlan_en = false;
 
-	phylink_rx_clk_stop_block(priv->phylink);
+	stmmac_clk_rx_i_require(priv);
 	stmmac_set_hw_vlan_mode(priv, priv->hw);
-	phylink_rx_clk_stop_unblock(priv->phylink);
+	stmmac_clk_rx_i_release(priv);
 
 	return 0;
 }
@@ -6378,9 +6388,9 @@ static int stmmac_set_mac_address(struct net_device *ndev, void *addr)
 	if (ret)
 		goto set_mac_error;
 
-	phylink_rx_clk_stop_block(priv->phylink);
+	stmmac_clk_rx_i_require(priv);
 	stmmac_set_umac_addr(priv, priv->hw, ndev->dev_addr, 0);
-	phylink_rx_clk_stop_unblock(priv->phylink);
+	stmmac_clk_rx_i_release(priv);
 
 set_mac_error:
 	pm_runtime_put(priv->device);
@@ -8192,11 +8202,11 @@ int stmmac_resume(struct device *dev)
 	stmmac_init_timestamping(priv);
 
 	stmmac_init_coalesce(priv);
-	phylink_rx_clk_stop_block(priv->phylink);
+	stmmac_clk_rx_i_require(priv);
 	stmmac_set_rx_mode(ndev);
 
 	stmmac_restore_hw_vlan_rx_fltr(priv, ndev, priv->hw);
-	phylink_rx_clk_stop_unblock(priv->phylink);
+	stmmac_clk_rx_i_release(priv);
 
 	stmmac_enable_all_queues(priv);
 	stmmac_enable_all_dma_irq(priv);
-- 
2.47.3