1228 	struct dmaengine_unmap_data *unmap;  in ntb_async_rx()  local
1247 	unmap = dmaengine_get_unmap_data(device->dev, 2, GFP_NOWAIT);  in ntb_async_rx()
1248 	if (!unmap)  in ntb_async_rx()
1251 	unmap->len = len;  in ntb_async_rx()
1252 	unmap->addr[0] = dma_map_page(device->dev, virt_to_page(offset),  in ntb_async_rx()
1254 	if (dma_mapping_error(device->dev, unmap->addr[0]))  in ntb_async_rx()
1257 	unmap->to_cnt = 1;  in ntb_async_rx()
1259 	unmap->addr[1] = dma_map_page(device->dev, virt_to_page(buf),  in ntb_async_rx()
1261 	if (dma_mapping_error(device->dev, unmap->addr[1]))  in ntb_async_rx()
1264 	unmap->from_cnt = 1;  in ntb_async_rx()
1266 	txd = device->device_prep_dma_memcpy(chan, unmap->addr[1],  in ntb_async_rx()
1267 					     unmap->addr[0], len,  in ntb_async_rx()
1274 	dma_set_unmap(txd, unmap);  in ntb_async_rx()
1280 	dmaengine_unmap_put(unmap);  in ntb_async_rx()
1289 	dmaengine_unmap_put(unmap);  in ntb_async_rx()
1291 	dmaengine_unmap_put(unmap);  in ntb_async_rx()
1457 	struct dmaengine_unmap_data *unmap;  in ntb_async_tx()  local
1485 	unmap = dmaengine_get_unmap_data(device->dev, 1, GFP_NOWAIT);  in ntb_async_tx()
1486 	if (!unmap)  in ntb_async_tx()
1489 	unmap->len = len;  in ntb_async_tx()
1490 	unmap->addr[0] = dma_map_page(device->dev, virt_to_page(buf),  in ntb_async_tx()
1492 	if (dma_mapping_error(device->dev, unmap->addr[0]))  in ntb_async_tx()
1495 	unmap->to_cnt = 1;  in ntb_async_tx()
1497 	txd = device->device_prep_dma_memcpy(chan, dest, unmap->addr[0], len,  in ntb_async_tx()
1504 	dma_set_unmap(txd, unmap);  in ntb_async_tx()
1510 	dmaengine_unmap_put(unmap);  in ntb_async_tx()
1517 	dmaengine_unmap_put(unmap);  in ntb_async_tx()
1519 	dmaengine_unmap_put(unmap);  in ntb_async_tx()