sdma_descq_freecnt
sde->desc_avail = sdma_descq_freecnt(sde);
sdma_desc_avail(sde, sdma_descq_freecnt(sde));
cnt = sdma_descq_freecnt(sde);
sde->desc_avail = sdma_descq_freecnt(sde);
sde->desc_avail = sdma_descq_freecnt(sde);
sdma_desc_avail(sde, sdma_descq_freecnt(sde));
sdma_desc_avail(sde, sdma_descq_freecnt(sde));
sde->desc_avail = sdma_descq_freecnt(sde);
return sde->descq_cnt - sdma_descq_freecnt(sde);
sde->desc_avail = sdma_descq_freecnt(sde);