Andrzej Hajda c1492b4c54 dmaengine: xgene-dma: fix handling xgene_dma_get_ring_size result
The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-09-25 07:38:10 +05:30
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