ioat_chan_dca_desc_t
ioat_chan_dca_desc_t *saved_prev;
ioat_chan_dca_desc_t *desc;
ioat_chan_dca_desc_t *prev;
desc = (ioat_chan_dca_desc_t *)&ring->cr_desc[ring->cr_desc_next];
prev = (ioat_chan_dca_desc_t *)&ring->cr_desc[ring->cr_desc_prev];
desc = (ioat_chan_dca_desc_t *)
prev = (ioat_chan_dca_desc_t *)
ASSERT(sizeof (ioat_chan_dca_desc_t) == 64);