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of: mdio: Fall back to mdiobus_register() with NULL device_node 

When the device_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.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2018-05-15 16:56:18 -07:00 committed by David S. Miller
parent c6213eb1ae
commit 6d07a68a59
1 changed files with 3 additions and 0 deletions
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3
drivers/of/of_mdio.c
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@ -204,6 +204,9 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
bool scanphys = false;
int addr, rc;
if (!np)
return mdiobus_register(mdio);
/* Do not continue if the node is disabled */
if (!of_device_is_available(np))
return -ENODEV;