Andy Shevchenko 5c02a42065 avr32: handle NULL as a valid clock object
Since NULL is used as valid clock object on optional clocks we have to handle
this case in avr32 implementation as well.

Fixes: e1824dfe0d8e (net: macb: Adjust tx_clk when link speed changes)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
2015-07-27 09:14:07 +02:00
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