cppi41_pop_desc
desc = cppi41_pop_desc(cdd, q_num);
desc_phys = cppi41_pop_desc(cdd, cdd->td_queue.complete);
desc_phys = cppi41_pop_desc(cdd, c->q_comp_num);
desc_phys = cppi41_pop_desc(cdd, c->q_num);
desc_phys = cppi41_pop_desc(cdd, c->q_comp_num);