gianfar: don't pass NULL dev ptr to DMA ops

Change all dma op invocations in gianfar.c to actually pass in the
device pointer.  Currently, the value is ignored, but it will be
used going forward as we implement archdata for 32-bit powerpc.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/gianfar.c

@@ -605,7 +605,7 @@ void stop_gfar(struct net_device *dev)
 
 	free_skb_resources(priv);
 
-	dma_free_coherent(NULL,
+	dma_free_coherent(&dev->dev,
 			sizeof(struct txbd8)*priv->tx_ring_size
 			+ sizeof(struct rxbd8)*priv->rx_ring_size,
 			priv->tx_bd_base,
@@ -626,7 +626,7 @@ static void free_skb_resources(struct gfar_private *priv)
 	for (i = 0; i < priv->tx_ring_size; i++) {
 
 		if (priv->tx_skbuff[i]) {
-			dma_unmap_single(NULL, txbdp->bufPtr,
+			dma_unmap_single(&priv->dev->dev, txbdp->bufPtr,
 					txbdp->length,
 					DMA_TO_DEVICE);
 			dev_kfree_skb_any(priv->tx_skbuff[i]);
@@ -643,7 +643,7 @@ 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(NULL, rxbdp->bufPtr,
+				dma_unmap_single(&priv->dev->dev, rxbdp->bufPtr,
 						priv->rx_buffer_size,
 						DMA_FROM_DEVICE);
 
@@ -708,7 +708,7 @@ 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(NULL,
+	vaddr = (unsigned long) dma_alloc_coherent(&dev->dev,
 			sizeof (struct txbd8) * priv->tx_ring_size +
 			sizeof (struct rxbd8) * priv->rx_ring_size,
 			&addr, GFP_KERNEL);
@@ -919,7 +919,7 @@ int startup_gfar(struct net_device *dev)
 rx_skb_fail:
 	free_skb_resources(priv);
 tx_skb_fail:
-	dma_free_coherent(NULL,
+	dma_free_coherent(&dev->dev,
 			sizeof(struct txbd8)*priv->tx_ring_size
 			+ sizeof(struct rxbd8)*priv->rx_ring_size,
 			priv->tx_bd_base,
@@ -1053,7 +1053,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	/* Set buffer length and pointer */
 	txbdp->length = skb->len;
-	txbdp->bufPtr = dma_map_single(NULL, skb->data,
+	txbdp->bufPtr = dma_map_single(&dev->dev, skb->data,
 			skb->len, DMA_TO_DEVICE);
 
 	/* Save the skb pointer so we can free it later */
@@ -1332,7 +1332,7 @@ struct sk_buff * gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp)
 	 */
 	skb_reserve(skb, alignamount);
 
-	bdp->bufPtr = dma_map_single(NULL, skb->data,
+	bdp->bufPtr = dma_map_single(&dev->dev, skb->data,
 			priv->rx_buffer_size, DMA_FROM_DEVICE);
 
 	bdp->length = 0;