ssb: Fix usage of struct device used for DMAing

Index: wireless-testing/drivers/net/wireless/b43/dma.c
===================================================================
@@ -328,10 +328,10 @@ static inline
 	dma_addr_t dmaaddr;
 
 	if (tx) {
-		dmaaddr = dma_map_single(ring->dev->dev->dev,
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
 					 buf, len, DMA_TO_DEVICE);
 	} else {
-		dmaaddr = dma_map_single(ring->dev->dev->dev,
+		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
 					 buf, len, DMA_FROM_DEVICE);
 	}
 

@@ -343,9 +343,10 @@ static inline
 			  dma_addr_t addr, size_t len, int tx)
 {
 	if (tx) {
-		dma_unmap_single(ring->dev->dev->dev, addr, len, DMA_TO_DEVICE);
+		dma_unmap_single(ring->dev->dev->dma_dev,
+				 addr, len, DMA_TO_DEVICE);
 	} else {
-		dma_unmap_single(ring->dev->dev->dev,
+		dma_unmap_single(ring->dev->dev->dma_dev,
 				 addr, len, DMA_FROM_DEVICE);
 	}
 }

@@ -355,7 +356,7 @@ static inline
 				 dma_addr_t addr, size_t len)
 {
 	B43_WARN_ON(ring->tx);
-	dma_sync_single_for_cpu(ring->dev->dev->dev,
+	dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
 				addr, len, DMA_FROM_DEVICE);
 }
 

@@ -364,7 +365,7 @@ static inline
 				    dma_addr_t addr, size_t len)
 {
 	B43_WARN_ON(ring->tx);
-	dma_sync_single_for_device(ring->dev->dev->dev,
+	dma_sync_single_for_device(ring->dev->dev->dma_dev,
 				   addr, len, DMA_FROM_DEVICE);
 }
 

@@ -380,7 +381,7 @@ static inline
 
 static int alloc_ringmemory(struct b43_dmaring *ring)
 {
-	struct device *dev = ring->dev->dev->dev;
+	struct device *dma_dev = ring->dev->dev->dma_dev;
 	gfp_t flags = GFP_KERNEL;
 
 	/* The specs call for 4K buffers for 30- and 32-bit DMA with 4K

@@ -394,7 +395,7 @@ static int alloc_ringmemory(struct b43_d
 	 */
 	if (ring->type == B43_DMA_64BIT)
 		flags |= GFP_DMA;
-	ring->descbase = dma_alloc_coherent(dev, B43_DMA_RINGMEMSIZE,
+	ring->descbase = dma_alloc_coherent(dma_dev, B43_DMA_RINGMEMSIZE,
 					    &(ring->dmabase), flags);
 	if (!ring->descbase) {
 		b43err(ring->dev->wl, "DMA ringmemory allocation failed\n");

@@ -407,9 +408,9 @@ static int alloc_ringmemory(struct b43_d
 
 static void free_ringmemory(struct b43_dmaring *ring)
 {
-	struct device *dev = ring->dev->dev->dev;
+	struct device *dma_dev = ring->dev->dev->dma_dev;
 
-	dma_free_coherent(dev, B43_DMA_RINGMEMSIZE,
+	dma_free_coherent(dma_dev, B43_DMA_RINGMEMSIZE,
 			  ring->descbase, ring->dmabase);
 }
 

@@ -818,7 +819,7 @@ struct b43_dmaring *b43_setup_dmaring(st
 			goto err_kfree_meta;
 
 		/* test for ability to dma to txhdr_cache */
-		dma_test = dma_map_single(dev->dev->dev,
+		dma_test = dma_map_single(dev->dev->dma_dev,
 					  ring->txhdr_cache,
 					  b43_txhdr_size(dev),
 					  DMA_TO_DEVICE);

@@ -833,7 +834,7 @@ struct b43_dmaring *b43_setup_dmaring(st
 			if (!ring->txhdr_cache)
 				goto err_kfree_meta;
 
-			dma_test = dma_map_single(dev->dev->dev,
+			dma_test = dma_map_single(dev->dev->dma_dev,
 						  ring->txhdr_cache,
 						  b43_txhdr_size(dev),
 						  DMA_TO_DEVICE);

@@ -847,7 +848,7 @@ struct b43_dmaring *b43_setup_dmaring(st
 			}
 		}
 
-		dma_unmap_single(dev->dev->dev,
+		dma_unmap_single(dev->dev->dma_dev,
 				 dma_test, b43_txhdr_size(dev),
 				 DMA_TO_DEVICE);
 	}

Index: wireless-testing/drivers/ssb/main.c
===================================================================
@@ -462,15 +462,18 @@ static int ssb_devices_register(struct s
 #ifdef CONFIG_SSB_PCIHOST
 			sdev->irq = bus->host_pci->irq;
 			dev->parent = &bus->host_pci->dev;
+			sdev->dma_dev = &bus->host_pci->dev;
 #endif
 			break;
 		case SSB_BUSTYPE_PCMCIA:
 #ifdef CONFIG_SSB_PCMCIAHOST
 			sdev->irq = bus->host_pcmcia->irq.AssignedIRQ;
 			dev->parent = &bus->host_pcmcia->dev;
+			sdev->dma_dev = &bus->host_pcmcia->dev;
 #endif
 			break;
 		case SSB_BUSTYPE_SSB:
+			sdev->dma_dev = dev;
 			break;
 		}
 

@@ -1164,15 +1167,14 @@ EXPORT_SYMBOL(ssb_dma_translation);
 
 int ssb_dma_set_mask(struct ssb_device *ssb_dev, u64 mask)
 {
-	struct device *dev = ssb_dev->dev;
+	struct device *dma_dev = ssb_dev->dma_dev;
 
 #ifdef CONFIG_SSB_PCIHOST
-	if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI &&
-	    !dma_supported(dev, mask))
-		return -EIO;
+	if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI)
+		return dma_set_mask(dma_dev, mask);
 #endif
-	dev->coherent_dma_mask = mask;
-	dev->dma_mask = &dev->coherent_dma_mask;
+	dma_dev->coherent_dma_mask = mask;
+	dma_dev->dma_mask = &dma_dev->coherent_dma_mask;
 
 	return 0;
 }

Index: wireless-testing/include/linux/ssb/ssb.h
===================================================================
@@ -137,6 +137,10 @@ struct ssb_device {
 	const struct ssb_bus_ops *ops;
 
 	struct device *dev;
+	/* Pointer to the device that has to be used for
+	 * any DMA related operation. */
+	struct device *dma_dev;
+
 	struct ssb_bus *bus;
 	struct ssb_device_id id;
 

196 lines not on this page · raw message