[PATCH net-next 1/2] of: mdio: Fall back to mdiobus_register() with np is NULL

[Florian Fainelli]

When the Device Tree node specified is NULL, fall back to
mdiobus_register(). We have a number of drivers having a similar pattern
which is:

if (np)
        of_mdiobus_register()
else
        mdiobus_register()

so incorporate that behavior within the core of_mdiobus_register()
function. This is also consistent with the stub version that we defined
when CONFIG_OF=n.

Signed-off-by: Florian Fainelli <f.faine...@gmail.com>
---
 drivers/of/of_mdio.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 8c0c92712fc9..2341dbf675bf 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -204,6 +204,12 @@ int of_mdiobus_register(struct mii_bus *mdio, struct 
device_node *np)
        bool scanphys = false;
        int addr, rc;
 
+       /* If the Device Tree node does not exist, fall back to traditional
+        * registration
+        */
+       if (!np)
+               return mdiobus_register(mdio);
+
        /* Do not continue if the node is disabled */
        if (!of_device_is_available(np))
                return -ENODEV;
-- 
2.14.1