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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>, David Wu <david.wu@rock-chips.com>,
	Heiner Kallweit <hkallweit1@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	netdev@vger.kernel.org, Paolo Abeni <pabeni@redhat.com>
Subject: [PATCH net v2] net: stmmac: rk: put the PHY clock on remove
Date: Fri, 08 Aug 2025 13:16:34 +0100	[thread overview]
Message-ID: <E1ukM1S-0086qo-PC@rmk-PC.armlinux.org.uk> (raw)

The PHY clock (bsp_priv->clk_phy) is obtained using of_clk_get(), which
doesn't take part in the devm release. Therefore, when a device is
unbound, this clock needs to be explicitly put. Fix this.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
Spotted this resource leak while making other changes to dwmac-rk.
Would be great if the dwmac-rk maintainers can test it.

v2: fix build error

 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 79b92130a03f..f6687c2f30f6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1765,11 +1765,15 @@ static int rk_gmac_probe(struct platform_device *pdev)
 
 static void rk_gmac_remove(struct platform_device *pdev)
 {
-	struct rk_priv_data *bsp_priv = get_stmmac_bsp_priv(&pdev->dev);
+	struct stmmac_priv *priv = netdev_priv(platform_get_drvdata(pdev));
+	struct rk_priv_data *bsp_priv = priv->plat->bsp_priv;
 
 	stmmac_dvr_remove(&pdev->dev);
 
 	rk_gmac_powerdown(bsp_priv);
+
+	if (priv->plat->phy_node && bsp_priv->integrated_phy)
+		clk_put(bsp_priv->clk_phy);
 }
 
 #ifdef CONFIG_PM_SLEEP
-- 
2.30.2



             reply	other threads:[~2025-08-08 12:39 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-08 12:16 Russell King (Oracle) [this message]
2025-08-08 13:57 ` [PATCH net v2] net: stmmac: rk: put the PHY clock on remove Simon Horman
2025-08-12  3:20 ` patchwork-bot+netdevbpf

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