net: hisilicon: Fix dma_map_single failed on arm64

On the arm64 platform, executing "ifconfig eth0 up" will fail,
returning "ifconfig: SIOCSIFFLAGS: Input/output error."

ndev->dev is not initialized, dma_map_single->get_dma_ops->
dummy_dma_ops->__dummy_map_page will return DMA_ERROR_CODE
directly, so when we use dma_map_single, the first parameter
is to use the device of platform_device.

Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c
index d775b980f1bbf6a1bd5df835c79192646f39ae85..c84167447abe650c36186eae40343b2584ac4fbb 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hip04_eth.c
+++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
@@ -220,6 +220,7 @@ struct hip04_priv {
        unsigned int reg_inten;
 
        struct napi_struct napi;
+       struct device *dev;
        struct net_device *ndev;
 
        struct tx_desc *tx_desc;
@@ -465,7 +466,7 @@ static int hip04_tx_reclaim(struct net_device *ndev, bool force)
                }
 
                if (priv->tx_phys[tx_tail]) {
-                       dma_unmap_single(&ndev->dev, priv->tx_phys[tx_tail],
+                       dma_unmap_single(priv->dev, priv->tx_phys[tx_tail],
                                         priv->tx_skb[tx_tail]->len,
                                         DMA_TO_DEVICE);
                        priv->tx_phys[tx_tail] = 0;
@@ -516,8 +517,8 @@ hip04_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
                return NETDEV_TX_BUSY;
        }
 
-       phys = dma_map_single(&ndev->dev, skb->data, skb->len, DMA_TO_DEVICE);
-       if (dma_mapping_error(&ndev->dev, phys)) {
+       phys = dma_map_single(priv->dev, skb->data, skb->len, DMA_TO_DEVICE);
+       if (dma_mapping_error(priv->dev, phys)) {
                dev_kfree_skb(skb);
                return NETDEV_TX_OK;
        }
@@ -596,7 +597,7 @@ static int hip04_rx_poll(struct napi_struct *napi, int budget)
                        goto refill;
                }
 
-               dma_unmap_single(&ndev->dev, priv->rx_phys[priv->rx_head],
+               dma_unmap_single(priv->dev, priv->rx_phys[priv->rx_head],
                                 RX_BUF_SIZE, DMA_FROM_DEVICE);
                priv->rx_phys[priv->rx_head] = 0;
 
@@ -625,9 +626,9 @@ refill:
                buf = netdev_alloc_frag(priv->rx_buf_size);
                if (!buf)
                        goto done;
-               phys = dma_map_single(&ndev->dev, buf,
+               phys = dma_map_single(priv->dev, buf,
                                      RX_BUF_SIZE, DMA_FROM_DEVICE);
-               if (dma_mapping_error(&ndev->dev, phys))
+               if (dma_mapping_error(priv->dev, phys))
                        goto done;
                priv->rx_buf[priv->rx_head] = buf;
                priv->rx_phys[priv->rx_head] = phys;
@@ -730,9 +731,9 @@ static int hip04_mac_open(struct net_device *ndev)
        for (i = 0; i < RX_DESC_NUM; i++) {
                dma_addr_t phys;
 
-               phys = dma_map_single(&ndev->dev, priv->rx_buf[i],
+               phys = dma_map_single(priv->dev, priv->rx_buf[i],
                                      RX_BUF_SIZE, DMA_FROM_DEVICE);
-               if (dma_mapping_error(&ndev->dev, phys))
+               if (dma_mapping_error(priv->dev, phys))
                        return -EIO;
 
                priv->rx_phys[i] = phys;
@@ -766,7 +767,7 @@ static int hip04_mac_stop(struct net_device *ndev)
 
        for (i = 0; i < RX_DESC_NUM; i++) {
                if (priv->rx_phys[i]) {
-                       dma_unmap_single(&ndev->dev, priv->rx_phys[i],
+                       dma_unmap_single(priv->dev, priv->rx_phys[i],
                                         RX_BUF_SIZE, DMA_FROM_DEVICE);
                        priv->rx_phys[i] = 0;
                }
@@ -909,6 +910,7 @@ static int hip04_mac_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        priv = netdev_priv(ndev);
+       priv->dev = d;
        priv->ndev = ndev;
        platform_set_drvdata(pdev, ndev);
        SET_NETDEV_DEV(ndev, &pdev->dev);