linux-kernel - [PATCH net-next v4 3/5] net: stmmac: make the pcs_lynx cleanup sequence specific to dwmac

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Message-Id: <20230607135941.407054-4-maxime.chevallier@bootlin.com>
Date:   Wed,  7 Jun 2023 15:59:39 +0200
From:   Maxime Chevallier <maxime.chevallier@...tlin.com>
To:     davem@...emloft.net
Cc:     Maxime Chevallier <maxime.chevallier@...tlin.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        alexis.lothore@...tlin.com, thomas.petazzoni@...tlin.com,
        Andrew Lunn <andrew@...n.ch>, Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Ioana Ciornei <ioana.ciornei@....com>,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Simon Horman <simon.horman@...igine.com>,
        Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
        Feiyang Chen <chenfeiyang@...ngson.cn>,
        Russell King <rmk+kernel@...linux.org.uk>
Subject: [PATCH net-next v4 3/5] net: stmmac: make the pcs_lynx cleanup sequence specific to dwmac_socfpga

So far, only the dwmac_socfpga variant of stmmac uses PCS Lynx. Use a
dedicated cleanup sequence for dwmac_socfpga instead of using the
generic stmmac one.

Fixes: 5d1f3fe7d2d5 ("net: stmmac: dwmac-sogfpga: use the lynx pcs driver")
Suggested-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
---
V3->V4 : No changes
V2->V3 : Removed extra whiteline
V1->V2 : New patch

 drivers/net/ethernet/stmicro/stmmac/common.h       |  1 -
 .../net/ethernet/stmicro/stmmac/dwmac-socfpga.c    | 14 +++++++++++++-
 drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c  |  3 ---
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 52c5ec553276..16e67c18b6f7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -16,7 +16,6 @@
 #include <linux/stmmac.h>
 #include <linux/phy.h>
 #include <linux/pcs/pcs-xpcs.h>
-#include <linux/pcs-lynx.h>
 #include <linux/module.h>
 #if IS_ENABLED(CONFIG_VLAN_8021Q)
 #define STMMAC_VLAN_TAG_USED
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index e399fccbafe5..1fb808be843b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -11,6 +11,7 @@
 #include <linux/phy.h>
 #include <linux/regmap.h>
 #include <linux/mdio/mdio-regmap.h>
+#include <linux/pcs-lynx.h>
 #include <linux/reset.h>
 #include <linux/stmmac.h>
 
@@ -494,6 +495,17 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static void socfpga_dwmac_remove(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	struct phylink_pcs *pcs = priv->hw->lynx_pcs;
+
+	stmmac_pltfr_remove(pdev);
+
+	lynx_pcs_destroy(pcs);
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int socfpga_dwmac_resume(struct device *dev)
 {
@@ -565,7 +577,7 @@ MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
 
 static struct platform_driver socfpga_dwmac_driver = {
 	.probe  = socfpga_dwmac_probe,
-	.remove_new = stmmac_pltfr_remove,
+	.remove_new = socfpga_dwmac_remove,
 	.driver = {
 		.name           = "socfpga-dwmac",
 		.pm		= &socfpga_dwmac_pm_ops,
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index c784a6731f08..3db1cb0fd160 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -665,9 +665,6 @@ int stmmac_mdio_unregister(struct net_device *ndev)
 	if (priv->hw->xpcs)
 		xpcs_destroy(priv->hw->xpcs);
 
-	if (priv->hw->lynx_pcs)
-		lynx_pcs_destroy(priv->hw->lynx_pcs);
-
 	mdiobus_unregister(priv->mii);
 	priv->mii->priv = NULL;
 	mdiobus_free(priv->mii);
-- 
2.40.1