1 files changed, 15 insertions, 33 deletions

diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
index 0aca193d9550d4..4ef05bad4613c9 100644
--- a/drivers/net/ethernet/sun/cassini.c
+++ b/drivers/net/ethernet/sun/cassini.c
@@ -90,8 +90,6 @@
 #include <linux/uaccess.h>
 #include <linux/jiffies.h>
 
-#define cas_page_map(x)      kmap_atomic((x))
-#define cas_page_unmap(x)    kunmap_atomic((x))
 #define CAS_NCPUS            num_online_cpus()
 
 #define cas_skb_release(x)  netif_rx(x)
@@ -1915,7 +1913,7 @@ static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
 	int off, swivel = RX_SWIVEL_OFF_VAL;
 	struct cas_page *page;
 	struct sk_buff *skb;
-	void *addr, *crcaddr;
+	void *crcaddr;
 	__sum16 csum;
 	char *p;
 
@@ -1936,7 +1934,7 @@ static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
 	skb_reserve(skb, swivel);
 
 	p = skb->data;
-	addr = crcaddr = NULL;
+	crcaddr = NULL;
 	if (hlen) { /* always copy header pages */
 		i = CAS_VAL(RX_COMP2_HDR_INDEX, words[1]);
 		page = cp->rx_pages[CAS_VAL(RX_INDEX_RING, i)][CAS_VAL(RX_INDEX_NUM, i)];
@@ -1948,12 +1946,10 @@ static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
 			i += cp->crc_size;
 		dma_sync_single_for_cpu(&cp->pdev->dev, page->dma_addr + off,
 					i, DMA_FROM_DEVICE);
-		addr = cas_page_map(page->buffer);
-		memcpy(p, addr + off, i);
+		memcpy(p, page_address(page->buffer) + off, i);
 		dma_sync_single_for_device(&cp->pdev->dev,
 					   page->dma_addr + off, i,
 					   DMA_FROM_DEVICE);
-		cas_page_unmap(addr);
 		RX_USED_ADD(page, 0x100);
 		p += hlen;
 		swivel = 0;
@@ -1984,12 +1980,11 @@ static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
 		/* make sure we always copy a header */
 		swivel = 0;
 		if (p == (char *) skb->data) { /* not split */
-			addr = cas_page_map(page->buffer);
-			memcpy(p, addr + off, RX_COPY_MIN);
+			memcpy(p, page_address(page->buffer) + off,
+			       RX_COPY_MIN);
 			dma_sync_single_for_device(&cp->pdev->dev,
 						   page->dma_addr + off, i,
 						   DMA_FROM_DEVICE);
-			cas_page_unmap(addr);
 			off += RX_COPY_MIN;
 			swivel = RX_COPY_MIN;
 			RX_USED_ADD(page, cp->mtu_stride);
@@ -2036,10 +2031,8 @@ static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
 			RX_USED_ADD(page, hlen + cp->crc_size);
 		}
 
-		if (cp->crc_size) {
-			addr = cas_page_map(page->buffer);
-			crcaddr  = addr + off + hlen;
-		}
+		if (cp->crc_size)
+			crcaddr = page_address(page->buffer) + off + hlen;
 
 	} else {
 		/* copying packet */
@@ -2061,12 +2054,10 @@ static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
 			i += cp->crc_size;
 		dma_sync_single_for_cpu(&cp->pdev->dev, page->dma_addr + off,
 					i, DMA_FROM_DEVICE);
-		addr = cas_page_map(page->buffer);
-		memcpy(p, addr + off, i);
+		memcpy(p, page_address(page->buffer) + off, i);
 		dma_sync_single_for_device(&cp->pdev->dev,
 					   page->dma_addr + off, i,
 					   DMA_FROM_DEVICE);
-		cas_page_unmap(addr);
 		if (p == (char *) skb->data) /* not split */
 			RX_USED_ADD(page, cp->mtu_stride);
 		else
@@ -2081,20 +2072,17 @@ static int cas_rx_process_pkt(struct cas *cp, struct cas_rx_comp *rxc,
 						page->dma_addr,
 						dlen + cp->crc_size,
 						DMA_FROM_DEVICE);
-			addr = cas_page_map(page->buffer);
-			memcpy(p, addr, dlen + cp->crc_size);
+			memcpy(p, page_address(page->buffer), dlen + cp->crc_size);
 			dma_sync_single_for_device(&cp->pdev->dev,
 						   page->dma_addr,
 						   dlen + cp->crc_size,
 						   DMA_FROM_DEVICE);
-			cas_page_unmap(addr);
 			RX_USED_ADD(page, dlen + cp->crc_size);
 		}
 end_copy_pkt:
-		if (cp->crc_size) {
-			addr    = NULL;
+		if (cp->crc_size)
 			crcaddr = skb->data + alloclen;
-		}
+
 		skb_put(skb, alloclen);
 	}
 
@@ -2103,8 +2091,6 @@ end_copy_pkt:
 		/* checksum includes FCS. strip it out. */
 		csum = csum_fold(csum_partial(crcaddr, cp->crc_size,
 					      csum_unfold(csum)));
-		if (addr)
-			cas_page_unmap(addr);
 	}
 	skb->protocol = eth_type_trans(skb, cp->dev);
 	if (skb->protocol == htons(ETH_P_IP)) {
@@ -2793,18 +2779,14 @@ static inline int cas_xmit_tx_ringN(struct cas *cp, int ring,
 
 		tabort = cas_calc_tabort(cp, skb_frag_off(fragp), len);
 		if (unlikely(tabort)) {
-			void *addr;
-
 			/* NOTE: len is always > tabort */
 			cas_write_txd(cp, ring, entry, mapping, len - tabort,
 				      ctrl, 0);
 			entry = TX_DESC_NEXT(ring, entry);
-
-			addr = cas_page_map(skb_frag_page(fragp));
-			memcpy(tx_tiny_buf(cp, ring, entry),
-			       addr + skb_frag_off(fragp) + len - tabort,
-			       tabort);
-			cas_page_unmap(addr);
+			memcpy_from_page(tx_tiny_buf(cp, ring, entry),
+					 skb_frag_page(fragp),
+					 skb_frag_off(fragp) + len - tabort,
+					 tabort);
 			mapping = tx_tiny_map(cp, ring, entry, tentry);
 			len     = tabort;
 		}