From: Guido Guenther <agx@sigxcpu.org>

- Use correct API for allocating and freeing DMA buffers.
Acked-by: NJohannes Stezenbach <js@linuxtv.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>