diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c
index 2550d4cf9609..f50cb520dffb 100644
--- a/drivers/net/typhoon.c
+++ b/drivers/net/typhoon.c
@@ -813,8 +813,7 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
 	first_txd->flags = TYPHOON_TX_DESC | TYPHOON_DESC_VALID;
 	first_txd->numDesc = 0;
 	first_txd->len = 0;
-	first_txd->addr = (u64)((unsigned long) skb) & 0xffffffff;
-	first_txd->addrHi = (u64)((unsigned long) skb) >> 32;
+	first_txd->tx_addr = (u64)((unsigned long) skb);
 	first_txd->processFlags = 0;
 
 	if(skb->ip_summed == CHECKSUM_PARTIAL) {
@@ -850,8 +849,8 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
 				       PCI_DMA_TODEVICE);
 		txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
 		txd->len = cpu_to_le16(skb->len);
-		txd->addr = cpu_to_le32(skb_dma);
-		txd->addrHi = 0;
+		txd->frag.addr = cpu_to_le32(skb_dma);
+		txd->frag.addrHi = 0;
 		first_txd->numDesc++;
 	} else {
 		int i, len;
@@ -861,8 +860,8 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
 				         PCI_DMA_TODEVICE);
 		txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
 		txd->len = cpu_to_le16(len);
-		txd->addr = cpu_to_le32(skb_dma);
-		txd->addrHi = 0;
+		txd->frag.addr = cpu_to_le32(skb_dma);
+		txd->frag.addrHi = 0;
 		first_txd->numDesc++;
 
 		for(i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
@@ -880,8 +879,8 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev)
 					 PCI_DMA_TODEVICE);
 			txd->flags = TYPHOON_FRAG_DESC | TYPHOON_DESC_VALID;
 			txd->len = cpu_to_le16(len);
-			txd->addr = cpu_to_le32(skb_dma);
-			txd->addrHi = 0;
+			txd->frag.addr = cpu_to_le32(skb_dma);
+			txd->frag.addrHi = 0;
 			first_txd->numDesc++;
 		}
 	}
@@ -1358,7 +1357,7 @@ typhoon_download_firmware(struct typhoon *tp)
 	u8 *image_data;
 	void *dpage;
 	dma_addr_t dpage_dma;
-	unsigned int csum;
+	__sum16 csum;
 	u32 irqEnabled;
 	u32 irqMasked;
 	u32 numSections;
@@ -1450,13 +1449,13 @@ typhoon_download_firmware(struct typhoon *tp)
 			 * summing. Fortunately, due to the properties of
 			 * the checksum, we can do this once, at the end.
 			 */
-			csum = csum_partial_copy_nocheck(image_data, dpage,
-							 len, 0);
-			csum = csum_fold(csum);
-			csum = le16_to_cpu(csum);
+			csum = csum_fold(csum_partial_copy_nocheck(image_data,
+								  dpage, len,
+								  0));
 
 			iowrite32(len, ioaddr + TYPHOON_REG_BOOT_LENGTH);
-			iowrite32(csum, ioaddr + TYPHOON_REG_BOOT_CHECKSUM);
+			iowrite32(le16_to_cpu((__force __le16)csum),
+					ioaddr + TYPHOON_REG_BOOT_CHECKSUM);
 			iowrite32(load_addr,
 					ioaddr + TYPHOON_REG_BOOT_DEST_ADDR);
 			iowrite32(0, ioaddr + TYPHOON_REG_BOOT_DATA_HI);
@@ -1551,13 +1550,13 @@ typhoon_clean_tx(struct typhoon *tp, struct transmit_ring *txRing,
 		if(type == TYPHOON_TX_DESC) {
 			/* This tx_desc describes a packet.
 			 */
-			unsigned long ptr = tx->addr | ((u64)tx->addrHi << 32);
+			unsigned long ptr = tx->tx_addr;
 			struct sk_buff *skb = (struct sk_buff *) ptr;
 			dev_kfree_skb_irq(skb);
 		} else if(type == TYPHOON_FRAG_DESC) {
 			/* This tx_desc describes a memory mapping. Free it.
 			 */
-			skb_dma = (dma_addr_t) le32_to_cpu(tx->addr);
+			skb_dma = (dma_addr_t) le32_to_cpu(tx->frag.addr);
 			dma_len = le16_to_cpu(tx->len);
 			pci_unmap_single(tp->pdev, skb_dma, dma_len,
 				       PCI_DMA_TODEVICE);
diff --git a/drivers/net/typhoon.h b/drivers/net/typhoon.h
index a02e09593970..dd7022ca7354 100644
--- a/drivers/net/typhoon.h
+++ b/drivers/net/typhoon.h
@@ -166,8 +166,13 @@ struct tx_desc {
 #define TYPHOON_DESC_VALID	0x80
 	u8  numDesc;
 	__le16 len;
-	u32 addr;
-	u32 addrHi;
+	union {
+		struct {
+			__le32 addr;
+			__le32 addrHi;
+		} frag;
+		u64 tx_addr;	/* opaque for hardware, for TX_DESC */
+	};
 	__le32 processFlags;
 #define TYPHOON_TX_PF_NO_CRC		__constant_cpu_to_le32(0x00000001)
 #define TYPHOON_TX_PF_IP_CHKSUM		__constant_cpu_to_le32(0x00000002)
@@ -240,8 +245,8 @@ struct rx_desc {
 	u8  flags;
 	u8  numDesc;
 	__le16 frameLen;
-	u32 addr;
-	u32 addrHi;
+	u32 addr;	/* opaque, comes from virtAddr */
+	u32 addrHi;	/* opaque, comes from virtAddrHi */
 	__le32 rxStatus;
 #define TYPHOON_RX_ERR_INTERNAL		__constant_cpu_to_le32(0x00000000)
 #define TYPHOON_RX_ERR_FIFO_UNDERRUN	__constant_cpu_to_le32(0x00000001)