1529 	struct dmaengine_unmap_data *unmap;  in ntb_async_rx_submit()  local
1541 	unmap = dmaengine_get_unmap_data(device->dev, 2, GFP_NOWAIT);  in ntb_async_rx_submit()
1542 	if (!unmap)  in ntb_async_rx_submit()
1545 	unmap->len = len;  in ntb_async_rx_submit()
1546 	unmap->addr[0] = dma_map_page(device->dev, virt_to_page(offset),  in ntb_async_rx_submit()
1548 	if (dma_mapping_error(device->dev, unmap->addr[0]))  in ntb_async_rx_submit()
1551 	unmap->to_cnt = 1;  in ntb_async_rx_submit()
1553 	unmap->addr[1] = dma_map_page(device->dev, virt_to_page(buf),  in ntb_async_rx_submit()
1555 	if (dma_mapping_error(device->dev, unmap->addr[1]))  in ntb_async_rx_submit()
1558 	unmap->from_cnt = 1;  in ntb_async_rx_submit()
1560 	txd = device->device_prep_dma_memcpy(chan, unmap->addr[1],  in ntb_async_rx_submit()
1561 					     unmap->addr[0], len,  in ntb_async_rx_submit()
1568 	dma_set_unmap(txd, unmap);  in ntb_async_rx_submit()
1574 	dmaengine_unmap_put(unmap);  in ntb_async_rx_submit()
1583 	dmaengine_unmap_put(unmap);  in ntb_async_rx_submit()
1585 	dmaengine_unmap_put(unmap);  in ntb_async_rx_submit()
1810 	struct dmaengine_unmap_data *unmap;  in ntb_async_tx_submit()  local
1822 	unmap = dmaengine_get_unmap_data(device->dev, 1, GFP_NOWAIT);  in ntb_async_tx_submit()
1823 	if (!unmap)  in ntb_async_tx_submit()
1826 	unmap->len = len;  in ntb_async_tx_submit()
1827 	unmap->addr[0] = dma_map_page(device->dev, virt_to_page(buf),  in ntb_async_tx_submit()
1829 	if (dma_mapping_error(device->dev, unmap->addr[0]))  in ntb_async_tx_submit()
1832 	unmap->to_cnt = 1;  in ntb_async_tx_submit()
1834 	txd = device->device_prep_dma_memcpy(chan, dest, unmap->addr[0], len,  in ntb_async_tx_submit()
1841 	dma_set_unmap(txd, unmap);  in ntb_async_tx_submit()
1847 	dmaengine_unmap_put(unmap);  in ntb_async_tx_submit()
1853 	dmaengine_unmap_put(unmap);  in ntb_async_tx_submit()
1855 	dmaengine_unmap_put(unmap);  in ntb_async_tx_submit()