netdev - [PATCH net-next 1/6] net: mdio: add mdio_device_get() and mdio_device

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Message-Id: <E1q2USm-008PAO-Gx@rmk-PC.armlinux.org.uk>
Date: Fri, 26 May 2023 11:14:24 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Jiawen Wu <jiawenwu@...stnetic.com>,
	 Maxime Chevallier <maxime.chevallier@...tlin.com>,
	 Simon Horman <simon.horman@...igine.com>,
	netdev@...r.kernel.org
Subject: [PATCH net-next 1/6] net: mdio: add mdio_device_get() and
 mdio_device_put()

Add two new operations for a mdio device to manage the refcount on the
underlying struct device. This will be used by mdio PCS drivers to
simplify the creation and destruction handling, making it easier for
users to get it correct.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 include/linux/mdio.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 0670cc6e067c..c1b7008826e5 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -106,6 +106,16 @@ int mdio_driver_register(struct mdio_driver *drv);
 void mdio_driver_unregister(struct mdio_driver *drv);
 int mdio_device_bus_match(struct device *dev, struct device_driver *drv);
 
+static inline void mdio_device_get(struct mdio_device *mdiodev)
+{
+	get_device(&mdiodev->dev);
+}
+
+static inline void mdio_device_put(struct mdio_device *mdiodev)
+{
+	mdio_device_free(mdiodev);
+}
+
 static inline bool mdio_phy_id_is_c45(int phy_id)
 {
 	return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);
-- 
2.30.2