net/macb: unify clock management

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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>

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Cyrille Pitchen 2015-03-07 07:23:31 +01:00 • committed by David S. Miller

parent a848748959

commit 93b31f48b3

1 changed files with 14 additions and 17 deletions

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drivers/net/ethernet/cadence/macb.c

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