linux-kernel - [PATCH net-next] net: dwmac-rk: No need to check the return value of phy_power

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Message-Id: <20251015051446.2677-1-sensor1010@163.com>
Date: Tue, 14 Oct 2025 22:14:46 -0700
From: Lizhe <sensor1010@....com>
To: andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	mcoquelin.stm32@...il.com,
	alexandre.torgue@...s.st.com,
	rmk+kernel@...linux.org.uk,
	jonas@...boo.se,
	chaoyi.chen@...k-chips.com,
	david.wu@...k-chips.com
Cc: netdev@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Lizhe <sensor1010@....com>
Subject: [PATCH net-next] net: dwmac-rk: No need to check the return value of phy_power_on()

'phy_power_on' is a local scope one within the driver, since the
return value of the phy_power_on() function is always 0, checking
its return value is redundant.

the function name 'phy_power_on()' conflicts with the existing
phy_power_on() function in the PHY subsystem. a suitable alternative
name would be rk_phy_power_set(), particularly since when the
second argument is false, this function actually powers off the PHY

Signed-off-by: Lizhe <sensor1010@....com>
---
 .../net/ethernet/stmicro/stmmac/dwmac-rk.c    | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 51ea0caf16c1..ac3324430b2d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1461,23 +1461,18 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
 	return 0;
 }
 
-static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
+static void rk_phy_power_set(struct rk_priv_data *bsp_priv, bool enable)
 {
 	struct regulator *ldo = bsp_priv->regulator;
 	struct device *dev = bsp_priv->dev;
-	int ret;
 
 	if (enable) {
-		ret = regulator_enable(ldo);
-		if (ret)
+		if (regulator_enable(ldo))
 			dev_err(dev, "fail to enable phy-supply\n");
 	} else {
-		ret = regulator_disable(ldo);
-		if (ret)
+		if (regulator_disable(ldo))
 			dev_err(dev, "fail to disable phy-supply\n");
 	}
-
-	return 0;
 }
 
 static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
@@ -1655,11 +1650,7 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
 		dev_err(dev, "NO interface defined!\n");
 	}
 
-	ret = phy_power_on(bsp_priv, true);
-	if (ret) {
-		gmac_clk_enable(bsp_priv, false);
-		return ret;
-	}
+	rk_phy_power_set(bsp_priv, true);
 
 	pm_runtime_get_sync(dev);
 
@@ -1676,7 +1667,7 @@ static void rk_gmac_powerdown(struct rk_priv_data *gmac)
 
 	pm_runtime_put_sync(gmac->dev);
 
-	phy_power_on(gmac, false);
+	rk_phy_power_set(gmac, false);
 	gmac_clk_enable(gmac, false);
 }
 
-- 
2.17.1