Function bus_dmamap_unload

freebsd/x86/include/bus_dma.h:107–116

* Release the mapping held by map. */

 * Release the mapping held by map.
 */
static inline void
bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
{
	struct bus_dma_tag_common *tc;

	if (map != NULL) {
		tc = (struct bus_dma_tag_common *)dmat;
		tc->impl->map_unload(dmat, map);
	}
}

static inline void
bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)