sh_eth: Fix cache invalidation omission of receive buffer

Signed-off-by: Kouei Abe <[email protected]>
Signed-off-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: koueiabe

drivers/net/ethernet/renesas/sh_eth.c

@@ -1342,6 +1342,9 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
 			mdp->rx_skbuff[entry] = NULL;
 			if (mdp->cd->rpadir)
 				skb_reserve(skb, NET_IP_ALIGN);
+			dma_sync_single_for_cpu(&ndev->dev, rxdesc->addr,
+						mdp->rx_buf_sz,
+						DMA_FROM_DEVICE);
 			skb_put(skb, pkt_len);
 			skb->protocol = eth_type_trans(skb, ndev);
 			netif_rx(skb);