scsi: 3w-9xxx: fully convert to the generic DMA API

The driver is currently using an odd mix of legacy PCI DMA API and
generic DMA API calls, switch it over to the generic API entirely.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Adam Radford <aradford@gmail.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/3w-9xxx.c

@@ -518,15 +518,17 @@ static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
 	unsigned long *cpu_addr;
 	int retval = 1;
 
-	cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle);
+	cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev,
+			size * TW_Q_LENGTH, &dma_handle, GFP_KERNEL);
 	if (!cpu_addr) {
 		TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed");
 		goto out;
 	}
 
 	if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) {
 		TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory");
-		pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle);
+		dma_free_coherent(&tw_dev->tw_pci_dev->dev, size * TW_Q_LENGTH,
+				cpu_addr, dma_handle);
 		goto out;
 	}
 
@@ -1027,16 +1029,16 @@ static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_
 static void twa_free_device_extension(TW_Device_Extension *tw_dev)
 {
 	if (tw_dev->command_packet_virt[0])
-		pci_free_consistent(tw_dev->tw_pci_dev,
-				    sizeof(TW_Command_Full)*TW_Q_LENGTH,
-				    tw_dev->command_packet_virt[0],
-				    tw_dev->command_packet_phys[0]);
+		dma_free_coherent(&tw_dev->tw_pci_dev->dev,
+				sizeof(TW_Command_Full) * TW_Q_LENGTH,
+				tw_dev->command_packet_virt[0],
+				tw_dev->command_packet_phys[0]);
 
 	if (tw_dev->generic_buffer_virt[0])
-		pci_free_consistent(tw_dev->tw_pci_dev,
-				    TW_SECTOR_SIZE*TW_Q_LENGTH,
-				    tw_dev->generic_buffer_virt[0],
-				    tw_dev->generic_buffer_phys[0]);
+		dma_free_coherent(&tw_dev->tw_pci_dev->dev,
+				TW_SECTOR_SIZE * TW_Q_LENGTH,
+				tw_dev->generic_buffer_virt[0],
+				tw_dev->generic_buffer_phys[0]);
 
 	kfree(tw_dev->event_queue[0]);
 } /* End twa_free_device_extension() */
@@ -2015,14 +2017,12 @@ static int twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
 	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
-	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
-	    || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
-		    || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
-			TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask");
-			retval = -ENODEV;
-			goto out_disable_device;
-		}
+	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) ||
+	    dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
+		TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask");
+		retval = -ENODEV;
+		goto out_disable_device;
+	}
 
 	host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
 	if (!host) {
@@ -2237,14 +2237,12 @@ static int twa_resume(struct pci_dev *pdev)
 	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
-	if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
-	    || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
-		    || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
-			TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume");
-			retval = -ENODEV;
-			goto out_disable_device;
-		}
+	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) ||
+	    dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
+		TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume");
+		retval = -ENODEV;
+		goto out_disable_device;
+	}
 
 	/* Initialize the card */
 	if (twa_reset_sequence(tw_dev, 0)) {