--- linux-3.11/drivers/net/ethernet/marvell/skge.c	2013-09-02 16:46:10.000000000 -0400
+++ linux-3.11.mod/drivers/net/ethernet/marvell/skge.c	2013-09-10 15:05:36.119772745 -0400
@@ -931,20 +931,17 @@
 }
 
 /* Allocate and setup a new buffer for receiving */
-static int skge_rx_setup(struct skge_port *skge, struct skge_element *e,
-			 struct sk_buff *skb, unsigned int bufsize)
+static void skge_rx_setup(struct skge_port *skge, struct skge_element *e,
+			  struct sk_buff *skb, unsigned int bufsize)
 {
 	struct skge_rx_desc *rd = e->desc;
-	dma_addr_t map;
+	u64 map;
 
 	map = pci_map_single(skge->hw->pdev, skb->data, bufsize,
 			     PCI_DMA_FROMDEVICE);
 
-	if (pci_dma_mapping_error(skge->hw->pdev, map))
-		return -1;
-
-	rd->dma_lo = lower_32_bits(map);
-	rd->dma_hi = upper_32_bits(map);
+	rd->dma_lo = map;
+	rd->dma_hi = map >> 32;
 	e->skb = skb;
 	rd->csum1_start = ETH_HLEN;
 	rd->csum2_start = ETH_HLEN;
@@ -956,7 +953,6 @@
 	rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | bufsize;
 	dma_unmap_addr_set(e, mapaddr, map);
 	dma_unmap_len_set(e, maplen, bufsize);
-	return 0;
 }
 
 /* Resume receiving using existing skb,
@@ -1018,10 +1014,7 @@
 			return -ENOMEM;
 
 		skb_reserve(skb, NET_IP_ALIGN);
-		if (skge_rx_setup(skge, e, skb, skge->rx_buf_size) < 0) {
-			dev_kfree_skb(skb);
-			return -EIO;
-		}
+		skge_rx_setup(skge, e, skb, skge->rx_buf_size);
 	} while ((e = e->next) != ring->start);
 
 	ring->to_clean = ring->start;
@@ -2551,7 +2544,7 @@
 
 	BUG_ON(skge->dma & 7);
 
-	if (upper_32_bits(skge->dma) != upper_32_bits(skge->dma + skge->mem_size)) {
+	if ((u64)skge->dma >> 32 != ((u64) skge->dma + skge->mem_size) >> 32) {
 		dev_err(&hw->pdev->dev, "pci_alloc_consistent region crosses 4G boundary\n");
 		err = -EINVAL;
 		goto free_pci_mem;
@@ -2736,7 +2729,7 @@
 	struct skge_tx_desc *td;
 	int i;
 	u32 control, len;
-	dma_addr_t map;
+	u64 map;
 
 	if (skb_padto(skb, ETH_ZLEN))
 		return NETDEV_TX_OK;
@@ -2750,14 +2743,11 @@
 	e->skb = skb;
 	len = skb_headlen(skb);
 	map = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
-	if (pci_dma_mapping_error(hw->pdev, map))
-		goto mapping_error;
-
 	dma_unmap_addr_set(e, mapaddr, map);
 	dma_unmap_len_set(e, maplen, len);
 
-	td->dma_lo = lower_32_bits(map);
-	td->dma_hi = upper_32_bits(map);
+	td->dma_lo = map;
+	td->dma_hi = map >> 32;
 
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
 		const int offset = skb_checksum_start_offset(skb);
@@ -2788,16 +2778,14 @@
 
 			map = skb_frag_dma_map(&hw->pdev->dev, frag, 0,
 					       skb_frag_size(frag), DMA_TO_DEVICE);
-			if (dma_mapping_error(&hw->pdev->dev, map))
-				goto mapping_unwind;
 
 			e = e->next;
 			e->skb = skb;
 			tf = e->desc;
 			BUG_ON(tf->control & BMU_OWN);
 
-			tf->dma_lo = lower_32_bits(map);
-			tf->dma_hi = upper_32_bits(map);
+			tf->dma_lo = map;
+			tf->dma_hi = (u64) map >> 32;
 			dma_unmap_addr_set(e, mapaddr, map);
 			dma_unmap_len_set(e, maplen, skb_frag_size(frag));
 
@@ -2827,26 +2815,6 @@
 	}
 
 	return NETDEV_TX_OK;
-
-mapping_unwind:
-	e = skge->tx_ring.to_use;
-	pci_unmap_single(hw->pdev,
-			 dma_unmap_addr(e, mapaddr),
-			 dma_unmap_len(e, maplen),
-			 PCI_DMA_TODEVICE);
-	while (i-- > 0) {
-		e = e->next;
-		pci_unmap_page(hw->pdev,
-			       dma_unmap_addr(e, mapaddr),
-			       dma_unmap_len(e, maplen),
-			       PCI_DMA_TODEVICE);
-	}
-
-mapping_error:
-	if (net_ratelimit())
-		dev_warn(&hw->pdev->dev, "%s: tx mapping error\n", dev->name);
-	dev_kfree_skb(skb);
-	return NETDEV_TX_OK;
 }
 
 
@@ -3077,13 +3045,11 @@
 
 		pci_dma_sync_single_for_cpu(skge->hw->pdev,
 					    dma_unmap_addr(e, mapaddr),
-					    dma_unmap_len(e, maplen),
-					    PCI_DMA_FROMDEVICE);
+					    len, PCI_DMA_FROMDEVICE);
 		skb_copy_from_linear_data(e->skb, skb->data, len);
 		pci_dma_sync_single_for_device(skge->hw->pdev,
 					       dma_unmap_addr(e, mapaddr),
-					       dma_unmap_len(e, maplen),
-					       PCI_DMA_FROMDEVICE);
+					       len, PCI_DMA_FROMDEVICE);
 		skge_rx_reuse(e, skge->rx_buf_size);
 	} else {
 		struct sk_buff *nskb;
@@ -3092,17 +3058,13 @@
 		if (!nskb)
 			goto resubmit;
 
-		if (skge_rx_setup(skge, e, nskb, skge->rx_buf_size) < 0) {
-			dev_kfree_skb(nskb);
-			goto resubmit;
-		}
-
 		pci_unmap_single(skge->hw->pdev,
 				 dma_unmap_addr(e, mapaddr),
 				 dma_unmap_len(e, maplen),
 				 PCI_DMA_FROMDEVICE);
 		skb = e->skb;
 		prefetch(skb->data);
+		skge_rx_setup(skge, e, nskb, skge->rx_buf_size);
 	}
 
 	skb_put(skb, len);