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Andrew Lunn authored
DSA can have nested MDIO busses, where the Ethernet MDIO bus is used to access an MDIO bus within the switch which has the PHYs connected to it. This nesting causes lockdep to give false positives. Use mutex_lock_nested() to avoid this. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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