b43legacy: replace the ssb_dma API with the generic DMA API

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stefano Brivio <stefano.brivio@polimi.it>
Cc: John W. Linville <linville@tuxdriver.com>
Acked-by: Michael Buesch <mb@bu3sch.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43legacy/dma.c

@@ -394,11 +394,11 @@ dma_addr_t map_descbuffer(struct b43legacy_dmaring *ring,
 	dma_addr_t dmaaddr;
 
 	if (tx)
-		dmaaddr = ssb_dma_map_single(ring->dev->dev,
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
 					     buf, len,
 					     DMA_TO_DEVICE);
 	else
-		dmaaddr = ssb_dma_map_single(ring->dev->dev,
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
 					     buf, len,
 					     DMA_FROM_DEVICE);
 
@@ -412,11 +412,11 @@ void unmap_descbuffer(struct b43legacy_dmaring *ring,
 		      int tx)
 {
 	if (tx)
-		ssb_dma_unmap_single(ring->dev->dev,
+		dma_unmap_single(ring->dev->dev->dma_dev,
 				     addr, len,
 				     DMA_TO_DEVICE);
 	else
-		ssb_dma_unmap_single(ring->dev->dev,
+		dma_unmap_single(ring->dev->dev->dma_dev,
 				     addr, len,
 				     DMA_FROM_DEVICE);
 }
@@ -428,7 +428,7 @@ void sync_descbuffer_for_cpu(struct b43legacy_dmaring *ring,
 {
 	B43legacy_WARN_ON(ring->tx);
 
-	ssb_dma_sync_single_for_cpu(ring->dev->dev,
+	dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
 				addr, len, DMA_FROM_DEVICE);
 }
 
@@ -439,7 +439,7 @@ void sync_descbuffer_for_device(struct b43legacy_dmaring *ring,
 {
 	B43legacy_WARN_ON(ring->tx);
 
-	ssb_dma_sync_single_for_device(ring->dev->dev,
+	dma_sync_single_for_device(ring->dev->dev->dma_dev,
 				   addr, len, DMA_FROM_DEVICE);
 }
 
@@ -460,7 +460,7 @@ void free_descriptor_buffer(struct b43legacy_dmaring *ring,
 static int alloc_ringmemory(struct b43legacy_dmaring *ring)
 {
 	/* GFP flags must match the flags in free_ringmemory()! */
-	ring->descbase = ssb_dma_alloc_consistent(ring->dev->dev,
+	ring->descbase = dma_alloc_coherent(ring->dev->dev->dma_dev,
 					    B43legacy_DMA_RINGMEMSIZE,
 					    &(ring->dmabase),
 					    GFP_KERNEL);
@@ -476,8 +476,8 @@ static int alloc_ringmemory(struct b43legacy_dmaring *ring)
 
 static void free_ringmemory(struct b43legacy_dmaring *ring)
 {
-	ssb_dma_free_consistent(ring->dev->dev, B43legacy_DMA_RINGMEMSIZE,
-				ring->descbase, ring->dmabase, GFP_KERNEL);
+	dma_free_coherent(ring->dev->dev->dma_dev, B43legacy_DMA_RINGMEMSIZE,
+			  ring->descbase, ring->dmabase);
 }
 
 /* Reset the RX DMA channel */
@@ -589,7 +589,7 @@ static bool b43legacy_dma_mapping_error(struct b43legacy_dmaring *ring,
 					 size_t buffersize,
 					 bool dma_to_device)
 {
-	if (unlikely(ssb_dma_mapping_error(ring->dev->dev, addr)))
+	if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
 		return 1;
 
 	switch (ring->type) {
@@ -906,7 +906,7 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
 			goto err_kfree_meta;
 
 		/* test for ability to dma to txhdr_cache */
-		dma_test = ssb_dma_map_single(dev->dev, ring->txhdr_cache,
+		dma_test = dma_map_single(dev->dev->dma_dev, ring->txhdr_cache,
 					      sizeof(struct b43legacy_txhdr_fw3),
 					      DMA_TO_DEVICE);
 
@@ -920,7 +920,7 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
 			if (!ring->txhdr_cache)
 				goto err_kfree_meta;
 
-			dma_test = ssb_dma_map_single(dev->dev,
+			dma_test = dma_map_single(dev->dev->dma_dev,
 					ring->txhdr_cache,
 					sizeof(struct b43legacy_txhdr_fw3),
 					DMA_TO_DEVICE);
@@ -930,7 +930,7 @@ struct b43legacy_dmaring *b43legacy_setup_dmaring(struct b43legacy_wldev *dev,
 				goto err_kfree_txhdr_cache;
 		}
 
-		ssb_dma_unmap_single(dev->dev, dma_test,
+		dma_unmap_single(dev->dev->dma_dev, dma_test,
 				 sizeof(struct b43legacy_txhdr_fw3),
 				 DMA_TO_DEVICE);
 	}
@@ -1040,9 +1040,12 @@ static int b43legacy_dma_set_mask(struct b43legacy_wldev *dev, u64 mask)
 	/* Try to set the DMA mask. If it fails, try falling back to a
 	 * lower mask, as we can always also support a lower one. */
 	while (1) {
-		err = ssb_dma_set_mask(dev->dev, mask);
+		err = dma_set_mask(dev->dev->dma_dev, mask);
+		if (!err) {
+			err = dma_set_coherent_mask(dev->dev->dma_dev, mask);
 			if (!err)
 				break;
+		}
 		if (mask == DMA_BIT_MASK(64)) {
 			mask = DMA_BIT_MASK(32);
 			fallback = 1;