sata_sil24: use dma_set_mask_and_coherent

Use the dma_set_mask_and_coherent helper to set the DMA mask. Rely
on the relatively recent change that setting a larger than required
mask will never fail to avoid the need for the boilerplate 32-bit
fallback code.

Signed-off-by: Christoph Hellwig <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/ata/sata_sil24.c

···
 	host->iomap = iomap;
 
 	/* configure and activate the device */
-	if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
-		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
-		if (rc) {
-			rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
-			if (rc) {
-				dev_err(&pdev->dev,
-					"64-bit DMA enable failed\n");
-				return rc;
-			}
-		}
-	} else {
-		rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
-		if (rc) {
-			dev_err(&pdev->dev, "32-bit DMA enable failed\n");
-			return rc;
-		}
-		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
-		if (rc) {
-			dev_err(&pdev->dev,
-				"32-bit consistent DMA enable failed\n");
-			return rc;
-		}
+	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (rc) {
+		dev_err(&pdev->dev, "DMA enable failed\n");
+		return rc;
 	}
 
 	/* Set max read request size to 4096.  This slightly increases