SAHARA_MAX_HW_DESC
SAHARA_MAX_HW_DESC * sizeof(struct sahara_hw_desc),
struct sahara_hw_desc *hw_desc[SAHARA_MAX_HW_DESC];
dma_addr_t hw_phys_desc[SAHARA_MAX_HW_DESC];
for (i = 0; i < SAHARA_MAX_HW_DESC; i++) {