net/macb: unify clock management
Most of the functions from the Common Clk Framework handle NULL pointer as input argument. Since the TX clock is optional, we now set tx_clk to NULL value instead of ERR_PTR(-ENOENT) when this clock is not available. This simplifies the clock management and avoid the need to test tx_clk value. Signed-off-by:Cyrille Pitchen <cyrille.pitchen@atmel.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by:
Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
a8487489
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