linux-kernel - [RFC PATCH v2 net-next 3/4] net: mdio: add unlocked mdiodev C45 bus accessors

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Message-ID: <552e004f6919e0dac90c9edc83120b84085309df.1765671579.git.daniel@makrotopia.org>
Date: Sun, 14 Dec 2025 00:41:23 +0000
From: Daniel Golle <daniel@...rotopia.org>
To: Daniel Golle <daniel@...rotopia.org>, Andrew Lunn <andrew@...n.ch>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Simon Horman <horms@...nel.org>, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Frank Wunderlich <frankwu@....de>, Chad Monroe <chad@...roe.io>,
	Cezary Wilmanski <cezary.wilmanski@...ran.com>,
	Avinash Jayaraman <ajayaraman@...linear.com>,
	Bing tao Xu <bxu@...linear.com>, Liang Xu <lxu@...linear.com>,
	Juraj Povazanec <jpovazanec@...linear.com>,
	"Fanni (Fang-Yi) Chan" <fchan@...linear.com>,
	"Benny (Ying-Tsan) Weng" <yweng@...linear.com>,
	"Livia M. Rosu" <lrosu@...linear.com>,
	John Crispin <john@...ozen.org>
Subject: [RFC PATCH v2 net-next 3/4] net: mdio: add unlocked mdiodev C45 bus
 accessors

Add helper inline functions __mdiodev_c45_read() and
__mdiodev_c45_write(), which are the C45 equivalents of the existing
__mdiodev_read() and __mdiodev_write() added by commit e6a45700e7e1
("net: mdio: add unlocked mdiobus and mdiodev bus accessors")

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
RFC v2: add this patch, initial submission

 include/linux/mdio.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 42d6d47e445b7..f39b4dba5cd4f 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -648,6 +648,19 @@ static inline int mdiodev_modify_changed(struct mdio_device *mdiodev,
 				      mask, set);
 }
 
+static inline int __mdiodev_c45_read(struct mdio_device *mdiodev, int devad,
+				     u16 regnum)
+{
+	return __mdiobus_c45_read(mdiodev->bus, mdiodev->addr, devad, regnum);
+}
+
+static inline int __mdiodev_c45_write(struct mdio_device *mdiodev, u32 devad,
+				      u16 regnum, u16 val)
+{
+	return __mdiobus_c45_write(mdiodev->bus, mdiodev->addr, devad, regnum,
+				 val);
+}
+
 static inline int mdiodev_c45_modify(struct mdio_device *mdiodev, int devad,
 				     u32 regnum, u16 mask, u16 set)
 {
-- 
2.52.0