From: Kouei Abe <kouei.abe.cp@renesas.com>
Date: Fri, 30 Aug 2013 03:41:07 +0000 (+0900)
Subject: sh_eth: Fix cache invalidation omission of receive buffer
X-Git-Tag: firefly_0821_release~176^2~5420^2~80
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7db8e0c14c9cb4adb667b4c558d8ffec8d5b40f2;p=firefly-linux-kernel-4.4.55.git

sh_eth: Fix cache invalidation omission of receive buffer

Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 06d8f62626e4..60ec0f754b83 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/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);