Subject: [PATCH AUTOSEL 5.13 033/189] net: mdio: provide shim implementation of devm_of_mdiobus_register

From: Sasha Levin <[email-masked]>
Date: Tue, 6 Jul 2021 07:11:33 -0400

From: Vladimir Oltean <[email-masked]>

[ Upstream commit 86544c3de6a2185409c5a3d02f674ea223a14217 ]

Similar to the way in which of_mdiobus_register() has a fallback to the
non-DT based mdiobus_register() when CONFIG_OF is not set, we can create
a shim for the device-managed devm_of_mdiobus_register() which calls
devm_mdiobus_register() and discards the struct device_node *.

In particular, this solves a build issue with the qca8k DSA driver which
uses devm_of_mdiobus_register and can be compiled without CONFIG_OF.

Reported-by: Randy Dunlap <[email-masked]>
Signed-off-by: Vladimir Oltean <[email-masked]>
Acked-by: Randy Dunlap <[email-masked]> # build-tested
Reviewed-by: Andrew Lunn <[email-masked]>
Reviewed-by: Florian Fainelli <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 include/linux/of_mdio.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/of_mdio.h b/include/linux/of_mdio.h
index 2b05e7f7c238..da633d34ab86 100644
--- a/include/linux/of_mdio.h
+++ b/include/linux/of_mdio.h
@@ -72,6 +72,13 @@ static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *
 	return mdiobus_register(mdio);
 }
 
+static inline int devm_of_mdiobus_register(struct device *dev,
+					   struct mii_bus *mdio,
+					   struct device_node *np)
+{
+	return devm_mdiobus_register(dev, mdio);
+}
+
 static inline struct mdio_device *of_mdio_find_device(struct device_node *np)
 {
 	return NULL;
-- 
2.30.2