net: sh_eth: fix cache coherency issue
Fix the problem that may not work receive process by cache coherency issue.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 3ab28bb..a742297 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -250,6 +250,8 @@
mdp->rx_skbuff[i] = skb;
if (skb == NULL)
break;
+ dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
+ DMA_FROM_DEVICE);
skb->dev = ndev; /* Mark as being used by this device. */
#if defined(CONFIG_CPU_SUBTYPE_SH7763)
reserve = SH7763_SKB_ALIGN
@@ -559,6 +561,8 @@
mdp->rx_skbuff[entry] = skb;
if (skb == NULL)
break; /* Better luck next round. */
+ dma_map_single(&ndev->dev, skb->tail, mdp->rx_buf_sz,
+ DMA_FROM_DEVICE);
skb->dev = ndev;
#if defined(CONFIG_CPU_SUBTYPE_SH7763)
reserve = SH7763_SKB_ALIGN