ns83820: convert to SKB paged frag API.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/natsemi/ns83820.c

@@ -1160,8 +1160,7 @@ static netdev_tx_t ns83820_hard_start_xmit(struct sk_buff *skb,
 		if (!nr_frags)
 			break;
 
-		buf = pci_map_page(dev->pci_dev, frag->page,
-				   frag->page_offset,
+		buf = skb_frag_dma_map(&dev->pci_dev->dev, frag, 0,
 				       frag->size, PCI_DMA_TODEVICE);
 		dprintk("frag: buf=%08Lx  page=%08lx offset=%08lx\n",
 			(long long)buf, (long) page_to_pfn(frag->page),