gianfar: pass the proper dev to DMA ops

We need to be passing the of_platform device struct into the DMA ops as
its the one that has the archdata setup to know which low-level DMA ops we
should be using (not the net_device one).  This isn't an issue until we
expect the archdata to be setup correctly.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 20 insertions, 17 deletions

diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index bed30ef43797..8659833f28eb 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -365,8 +365,10 @@ static int gfar_probe(struct of_device *ofdev,
                 return -ENOMEM;
 
         priv = netdev_priv(dev);
-        priv->dev = dev;
+        priv->ndev = dev;
+        priv->ofdev = ofdev;
         priv->node = ofdev->node;
+        SET_NETDEV_DEV(dev, &ofdev->dev);
 
         err = gfar_of_init(dev);
 
@@ -538,7 +540,7 @@ static int gfar_remove(struct of_device *ofdev)
         dev_set_drvdata(&ofdev->dev, NULL);
 
         iounmap(priv->regs);
-        free_netdev(priv->dev);
+        free_netdev(priv->ndev);
 
         return 0;
 }
@@ -870,7 +872,7 @@ void stop_gfar(struct net_device *dev)
 
         free_skb_resources(priv);
 
-        dma_free_coherent(&dev->dev,
+        dma_free_coherent(&priv->ofdev->dev,
                         sizeof(struct txbd8)*priv->tx_ring_size
                         + sizeof(struct rxbd8)*priv->rx_ring_size,
                         priv->tx_bd_base,
@@ -892,12 +894,12 @@ static void free_skb_resources(struct gfar_private *priv)
                 if (!priv->tx_skbuff[i])
                         continue;
 
-                dma_unmap_single(&priv->dev->dev, txbdp->bufPtr,
+                dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr,
                                 txbdp->length, DMA_TO_DEVICE);
                 txbdp->lstatus = 0;
                 for (j = 0; j < skb_shinfo(priv->tx_skbuff[i])->nr_frags; j++) {
                         txbdp++;
-                        dma_unmap_page(&priv->dev->dev, txbdp->bufPtr,
+                        dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr,
                                         txbdp->length, DMA_TO_DEVICE);
                 }
                 txbdp++;
@@ -914,7 +916,7 @@ static void free_skb_resources(struct gfar_private *priv)
         if(priv->rx_skbuff != NULL) {
                 for (i = 0; i < priv->rx_ring_size; i++) {
                         if (priv->rx_skbuff[i]) {
-                                dma_unmap_single(&priv->dev->dev, rxbdp->bufPtr,
+                                dma_unmap_single(&priv->ofdev->dev, rxbdp->bufPtr,
                                                 priv->rx_buffer_size,
                                                 DMA_FROM_DEVICE);
 
@@ -980,7 +982,7 @@ int startup_gfar(struct net_device *dev)
         gfar_write(&regs->imask, IMASK_INIT_CLEAR);
 
         /* Allocate memory for the buffer descriptors */
-        vaddr = (unsigned long) dma_alloc_coherent(&dev->dev,
+        vaddr = (unsigned long) dma_alloc_coherent(&priv->ofdev->dev,
                         sizeof (struct txbd8) * priv->tx_ring_size +
                         sizeof (struct rxbd8) * priv->rx_ring_size,
                         &addr, GFP_KERNEL);
@@ -1192,7 +1194,7 @@ err_rxalloc_fail:
 rx_skb_fail:
         free_skb_resources(priv);
 tx_skb_fail:
-        dma_free_coherent(&dev->dev,
+        dma_free_coherent(&priv->ofdev->dev,
                         sizeof(struct txbd8)*priv->tx_ring_size
                         + sizeof(struct rxbd8)*priv->rx_ring_size,
                         priv->tx_bd_base,
@@ -1345,7 +1347,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
                         if (i == nr_frags - 1)
                                 lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
 
-                        bufaddr = dma_map_page(&dev->dev,
+                        bufaddr = dma_map_page(&priv->ofdev->dev,
                                         skb_shinfo(skb)->frags[i].page,
                                         skb_shinfo(skb)->frags[i].page_offset,
                                         length,
@@ -1377,7 +1379,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
         /* setup the TxBD length and buffer pointer for the first BD */
         priv->tx_skbuff[priv->skb_curtx] = skb;
-        txbdp_start->bufPtr = dma_map_single(&dev->dev, skb->data,
+        txbdp_start->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
                         skb_headlen(skb), DMA_TO_DEVICE);
 
         lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb);
@@ -1563,7 +1565,7 @@ static void gfar_reset_task(struct work_struct *work)
 {
         struct gfar_private *priv = container_of(work, struct gfar_private,
                         reset_task);
-        struct net_device *dev = priv->dev;
+        struct net_device *dev = priv->ndev;
 
         if (dev->flags & IFF_UP) {
                 stop_gfar(dev);
@@ -1610,7 +1612,7 @@ static int gfar_clean_tx_ring(struct net_device *dev)
                                 (lstatus & BD_LENGTH_MASK))
                         break;
 
-                dma_unmap_single(&dev->dev,
+                dma_unmap_single(&priv->ofdev->dev,
                                 bdp->bufPtr,
                                 bdp->length,
                                 DMA_TO_DEVICE);
@@ -1619,7 +1621,7 @@ static int gfar_clean_tx_ring(struct net_device *dev)
                 bdp = next_txbd(bdp, base, tx_ring_size);
 
                 for (i = 0; i < frags; i++) {
-                        dma_unmap_page(&dev->dev,
+                        dma_unmap_page(&priv->ofdev->dev,
                                         bdp->bufPtr,
                                         bdp->length,
                                         DMA_TO_DEVICE);
@@ -1696,7 +1698,7 @@ static void gfar_new_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
         struct gfar_private *priv = netdev_priv(dev);
         u32 lstatus;
 
-        bdp->bufPtr = dma_map_single(&dev->dev, skb->data,
+        bdp->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
                         priv->rx_buffer_size, DMA_FROM_DEVICE);
 
         lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
@@ -1856,7 +1858,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
 
                 skb = priv->rx_skbuff[priv->skb_currx];
 
-                dma_unmap_single(&priv->dev->dev, bdp->bufPtr,
+                dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr,
                                 priv->rx_buffer_size, DMA_FROM_DEVICE);
 
                 /* We drop the frame if we failed to allocate a new buffer */
@@ -1916,7 +1918,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
 static int gfar_poll(struct napi_struct *napi, int budget)
 {
         struct gfar_private *priv = container_of(napi, struct gfar_private, napi);
-        struct net_device *dev = priv->dev;
+        struct net_device *dev = priv->ndev;
         int tx_cleaned = 0;
         int rx_cleaned = 0;
         unsigned long flags;
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 54332b0059df..dd499d7cde26 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -738,7 +738,8 @@ struct gfar_private {
         spinlock_t rxlock;
 
         struct device_node *node;
-        struct net_device *dev;
+        struct net_device *ndev;
+        struct of_device *ofdev;
         struct napi_struct napi;
 
         /* skb array and index */