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Commit 3e230993 authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by David S. Miller
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sh_eth: fix TX buffer byte-swapping 



For the little-endian SH771x kernels the driver has to byte-swap the RX/TX
buffers,  however yet unset physcial address from the TX descriptor is used
to call sh_eth_soft_swap(). Use 'skb->data' instead...

Fixes: 31fcb99d ("net: sh_eth: remove __flush_purge_region")
Signed-off-by: default avatarSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5037e9ef

drivers/net/ethernet/renesas/sh_eth.c

+1 −2
Original line number Diff line number Diff line
@@ -2396,8 +2396,7 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev) 
	txdesc = &mdp->tx_ring[entry];

	/* soft swap. */

	if (!mdp->cd->hw_swap)

		sh_eth_soft_swap(phys_to_virt(ALIGN(txdesc->addr, 4)),

				 skb->len + 2);

		sh_eth_soft_swap(PTR_ALIGN(skb->data, 4), skb->len + 2);

	txdesc->addr = dma_map_single(&ndev->dev, skb->data, skb->len,

				      DMA_TO_DEVICE);

	if (dma_mapping_error(&ndev->dev, txdesc->addr)) {