linux-kernel - [PATCH net-next v2 1/3] net: phy: mscc: Simplify LED mode update using phy

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Message-ID: <20251107201232.282152-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Fri,  7 Nov 2025 20:12:30 +0000
From: Prabhakar <prabhakar.csengg@...il.com>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Horatiu Vultur <horatiu.vultur@...rochip.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Vladimir Oltean <vladimir.oltean@....com>,
	Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH net-next v2 1/3] net: phy: mscc: Simplify LED mode update using phy_modify()

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

The vsc85xx_led_cntl_set() function currently performs a manual
read-modify-write sequence protected by the PHY lock to update the
LED mode register (MSCC_PHY_LED_MODE_SEL).

Replace this sequence with a call to phy_modify(), which already
handles read-modify-write operations with proper locking inside
the PHY core.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
v1->v2:
- New patch
---
 drivers/net/phy/mscc/mscc_main.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/net/phy/mscc/mscc_main.c b/drivers/net/phy/mscc/mscc_main.c
index 8678ebf89cca..032050ec0bc9 100644
--- a/drivers/net/phy/mscc/mscc_main.c
+++ b/drivers/net/phy/mscc/mscc_main.c
@@ -177,17 +177,10 @@ static int vsc85xx_led_cntl_set(struct phy_device *phydev,
 				u8 led_num,
 				u8 mode)
 {
-	int rc;
-	u16 reg_val;
-
-	mutex_lock(&phydev->lock);
-	reg_val = phy_read(phydev, MSCC_PHY_LED_MODE_SEL);
-	reg_val &= ~LED_MODE_SEL_MASK(led_num);
-	reg_val |= LED_MODE_SEL(led_num, (u16)mode);
-	rc = phy_write(phydev, MSCC_PHY_LED_MODE_SEL, reg_val);
-	mutex_unlock(&phydev->lock);
+	u16 mask = LED_MODE_SEL_MASK(led_num);
+	u16 val = LED_MODE_SEL(led_num, mode);
 
-	return rc;
+	return phy_modify(phydev, MSCC_PHY_LED_MODE_SEL, mask, val);
 }
 
 static int vsc85xx_mdix_get(struct phy_device *phydev, u8 *mdix)
-- 
2.43.0