net: sh_eth: remove __flush_purge_region

It is a function of SuperH architecture. There is no good to use
the function on a driver generally. So, the driver uses
dma_map_single() instead of __flush_purge_region.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 96a629f1678e..3da168a859ca 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -33,7 +33,6 @@
 #include <linux/pm_runtime.h>
 #include <linux/slab.h>
 #include <linux/ethtool.h>
-#include <asm/cacheflush.h>
 
 #include "sh_eth.h"
 
@@ -864,6 +863,8 @@ static int sh_eth_txfree(struct net_device *ndev)
                         break;
                 /* Free the original skb. */
                 if (mdp->tx_skbuff[entry]) {
+                        dma_unmap_single(&ndev->dev, txdesc->addr,
+                                         txdesc->buffer_length, DMA_TO_DEVICE);
                         dev_kfree_skb_irq(mdp->tx_skbuff[entry]);
                         mdp->tx_skbuff[entry] = NULL;
                         freeNum++;
@@ -1487,13 +1488,12 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
         entry = mdp->cur_tx % TX_RING_SIZE;
         mdp->tx_skbuff[entry] = skb;
         txdesc = &mdp->tx_ring[entry];
-        txdesc->addr = virt_to_phys(skb->data);
         /* soft swap. */
         if (!mdp->cd->hw_swap)
                 sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)),
                                  skb->len + 2);
-        /* write back */
-        __flush_purge_region(skb->data, skb->len);
+        txdesc->addr = dma_map_single(&ndev->dev, skb->data, skb->len,
+                                      DMA_TO_DEVICE);
         if (skb->len < ETHERSMALL)
                 txdesc->buffer_length = ETHERSMALL;
         else