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authorFlorian Fainelli <f.fainelli@gmail.com>2016-04-28 16:24:12 -0700
committerDavid S. Miller <davem@davemloft.net>2016-05-01 19:34:29 -0400
commita77f4f70fd34ac7b67581fe5b89ddc1c9ac20d39 (patch)
treed304258f6d37948848d165e4087292346fbe8211 /net/tipc
parent3cfef195212976032ce7bcd6b4d0b9f1e4741725 (diff)
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of: of_mdio: Check if MDIO bus controller is available
Add a check whether the 'struct device_node' pointer passed to of_mdiobus_register() is an available (aka enabled) node in the Device Tree. Rationale for doing this are cases where an Ethernet MAC provides a MDIO bus controller and node, and an additional Ethernet MAC might be connecting its PHY/switches to that first MDIO bus controller, while still embedding one internally which is therefore marked as "disabled". Instead of sprinkling checks like these in callers of of_mdiobus_register(), do this in a central location. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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