diff options
| author | Felix Fietkau <nbd@nbd.name> | 2021-04-22 22:20:55 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-23 13:31:57 -0700 |
| commit | 5196c417854942e218a59ec87bf7d414b3bd581e (patch) | |
| tree | 7bd0afcf732eddb6baa8423f38bfa67fadf978b1 /drivers/net/ethernet/mediatek | |
| parent | 3f57d8c40fea9b20543cab4da12f4680d2ef182c (diff) | |
| download | lwn-5196c417854942e218a59ec87bf7d414b3bd581e.tar.gz lwn-5196c417854942e218a59ec87bf7d414b3bd581e.zip | |
net: ethernet: mtk_eth_soc: unmap RX data before calling build_skb
Since build_skb accesses the data area (for initializing shinfo), dma unmap
needs to happen before that call
Signed-off-by: Felix Fietkau <nbd@nbd.name>
[Ilya: split build_skb cleanup fix into a separate commit]
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mediatek')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index b2175ec451ab..540003f3fcb8 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1298,6 +1298,9 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, goto release_desc; } + dma_unmap_single(eth->dev, trxd.rxd1, + ring->buf_size, DMA_FROM_DEVICE); + /* receive data */ skb = build_skb(data, ring->frag_size); if (unlikely(!skb)) { @@ -1307,8 +1310,6 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget, } skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN); - dma_unmap_single(eth->dev, trxd.rxd1, - ring->buf_size, DMA_FROM_DEVICE); pktlen = RX_DMA_GET_PLEN0(trxd.rxd2); skb->dev = netdev; skb_put(skb, pktlen); |