pasemi_dma_alloc_ring
extern int pasemi_dma_alloc_ring(struct pasemi_dmachan *chan, int ring_size);
EXPORT_SYMBOL(pasemi_dma_alloc_ring);
if (pasemi_dma_alloc_ring(&ring->chan, CS_RING_SIZE))
if (pasemi_dma_alloc_ring(&ring->chan, RX_RING_SIZE))
if (pasemi_dma_alloc_ring(&ring->chan, TX_RING_SIZE))