ath79: ag71xx: pass correct device pointer to dma functions

linux 4.19 doesn't accept a NULL device for these functions.
It also complains that the device struct in net_device doesn't have
a dma_mask set.
Pass the device struct from platform_device for these functions.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

diff --git a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
index f03c6b40a64e24bae8fe0d7c164b7a94532b2cb1..95848f611c7b544686a451656c0eed78a1e4e473 100644 (file)
--- a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
+++ b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
@@ -162,7 +162,7 @@ static void ag71xx_ring_rx_clean(struct ag71xx *ag)
 
        for (i = 0; i < ring_size; i++)
                if (ring->buf[i].rx_buf) {
-                       dma_unmap_single(&ag->dev->dev, ring->buf[i].dma_addr,
+                       dma_unmap_single(&ag->pdev->dev, ring->buf[i].dma_addr,
                                         ag->rx_buf_size, DMA_FROM_DEVICE);
                        skb_free_frag(ring->buf[i].rx_buf);
                }
@@ -187,7 +187,7 @@ static bool ag71xx_fill_rx_buf(struct ag71xx *ag, struct ag71xx_buf *buf,
                return false;
 
        buf->rx_buf = data;
-       buf->dma_addr = dma_map_single(&ag->dev->dev, data, ag->rx_buf_size,
+       buf->dma_addr = dma_map_single(&ag->pdev->dev, data, ag->rx_buf_size,
                                       DMA_FROM_DEVICE);
        desc->data = (u32) buf->dma_addr + offset;
        return true;
@@ -276,7 +276,7 @@ static int ag71xx_rings_init(struct ag71xx *ag)
        if (!tx->buf)
                return -ENOMEM;
 
-       tx->descs_cpu = dma_alloc_coherent(NULL, ring_size * AG71XX_DESC_SIZE,
+       tx->descs_cpu = dma_alloc_coherent(&ag->pdev->dev, ring_size * AG71XX_DESC_SIZE,
                                           &tx->descs_dma, GFP_ATOMIC);
        if (!tx->descs_cpu) {
                kfree(tx->buf);
@@ -299,7 +299,7 @@ static void ag71xx_rings_free(struct ag71xx *ag)
        int ring_size = BIT(tx->order) + BIT(rx->order);
 
        if (tx->descs_cpu)
-               dma_free_coherent(NULL, ring_size * AG71XX_DESC_SIZE,
+               dma_free_coherent(&ag->pdev->dev, ring_size * AG71XX_DESC_SIZE,
                                  tx->descs_cpu, tx->descs_dma);
 
        kfree(tx->buf);
@@ -892,7 +892,7 @@ static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb,
                goto err_drop;
        }
 
-       dma_addr = dma_map_single(&dev->dev, skb->data, skb->len,
+       dma_addr = dma_map_single(&ag->pdev->dev, skb->data, skb->len,
                                  DMA_TO_DEVICE);
 
        i = ring->curr & ring_mask;
@@ -934,7 +934,7 @@ static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb,
        return NETDEV_TX_OK;
 
 err_drop_unmap:
-       dma_unmap_single(&dev->dev, dma_addr, skb->len, DMA_TO_DEVICE);
+       dma_unmap_single(&ag->pdev->dev, dma_addr, skb->len, DMA_TO_DEVICE);
 
 err_drop:
        dev->stats.tx_dropped++;
@@ -1147,7 +1147,7 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
                pktlen = desc->ctrl & pktlen_mask;
                pktlen -= ETH_FCS_LEN;
 
-               dma_unmap_single(&dev->dev, ring->buf[i].dma_addr,
+               dma_unmap_single(&ag->pdev->dev, ring->buf[i].dma_addr,
                                 ag->rx_buf_size, DMA_FROM_DEVICE);
 
                dev->stats.rx_packets++;