mtip32xx: fully switch to the generic DMA API

The mtip32xx used an odd mix of the old PCI and the generic DMA API, so switch it over to the generic API entirely. Note that this also removes a weird fallback to just a 32-bit coherent dma mask if the 64-bit dma mask doesn't work, as that can't even happen. Reviewed-by: Johannes Thumshirn <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
fracktal · Oct 18, 2018 · ee75fa2 · ee75fa2
1 parent 77a12e5
commit ee75fa2
Showing 1 changed file with 18 additions and 29 deletions.
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
@@ -1862,11 +1862,9 @@ static int exec_drive_taskfile(struct driver_data *dd,
 		if (IS_ERR(outbuf))
 			return PTR_ERR(outbuf);
 
-		outbuf_dma = pci_map_single(dd->pdev,
-					 outbuf,
-					 taskout,
-					 DMA_TO_DEVICE);
-		if (pci_dma_mapping_error(dd->pdev, outbuf_dma)) {
+		outbuf_dma = dma_map_single(&dd->pdev->dev, outbuf,
+					    taskout, DMA_TO_DEVICE);
+		if (dma_mapping_error(&dd->pdev->dev, outbuf_dma)) {
 			err = -ENOMEM;
 			goto abort;
 		}
@@ -1880,10 +1878,9 @@ static int exec_drive_taskfile(struct driver_data *dd,
 			inbuf = NULL;
 			goto abort;
 		}
-		inbuf_dma = pci_map_single(dd->pdev,
-					 inbuf,
-					 taskin, DMA_FROM_DEVICE);
-		if (pci_dma_mapping_error(dd->pdev, inbuf_dma)) {
+		inbuf_dma = dma_map_single(&dd->pdev->dev, inbuf,
+					   taskin, DMA_FROM_DEVICE);
+		if (dma_mapping_error(&dd->pdev->dev, inbuf_dma)) {
 			err = -ENOMEM;
 			goto abort;
 		}
@@ -2002,11 +1999,11 @@ static int exec_drive_taskfile(struct driver_data *dd,
 
 	/* reclaim the DMA buffers.*/
 	if (inbuf_dma)
-		pci_unmap_single(dd->pdev, inbuf_dma,
-			taskin, DMA_FROM_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, inbuf_dma, taskin,
+				 DMA_FROM_DEVICE);
 	if (outbuf_dma)
-		pci_unmap_single(dd->pdev, outbuf_dma,
-			taskout, DMA_TO_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, outbuf_dma, taskout,
+				 DMA_TO_DEVICE);
 	inbuf_dma  = 0;
 	outbuf_dma = 0;
 
@@ -2053,11 +2050,11 @@ static int exec_drive_taskfile(struct driver_data *dd,
 	}
 abort:
 	if (inbuf_dma)
-		pci_unmap_single(dd->pdev, inbuf_dma,
-					taskin, DMA_FROM_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, inbuf_dma, taskin,
+				 DMA_FROM_DEVICE);
 	if (outbuf_dma)
-		pci_unmap_single(dd->pdev, outbuf_dma,
-					taskout, DMA_TO_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, outbuf_dma, taskout,
+				 DMA_TO_DEVICE);
 	kfree(outbuf);
 	kfree(inbuf);
 
@@ -4216,18 +4213,10 @@ static int mtip_pci_probe(struct pci_dev *pdev,
 		goto iomap_err;
 	}
 
-	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
-		rv = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-
-		if (rv) {
-			rv = pci_set_consistent_dma_mask(pdev,
-						DMA_BIT_MASK(32));
-			if (rv) {
-				dev_warn(&pdev->dev,
-					"64-bit DMA enable failed\n");
-				goto setmask_err;
-			}
-		}
+	rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (rv) {
+		dev_warn(&pdev->dev, "64-bit DMA enable failed\n");
+		goto setmask_err;
 	}
 
 	/* Copy the info we may need later into the private data structure. */