scsi: 3w-sas: fix calls to dma_set_mask_and_coherent()

hreinecke · martinkpetersen · commit 1feb3b022949 · 2019-02-25T21:37:26.000-05:00
The change to use dma_set_mask_and_coherent() incorrectly made a second call with the 32 bit DMA mask value when the call with the 64 bit DMA mask value succeeded. Fixes: b1fa122 ("scsi: 3w-sas: fully convert to the generic DMA API") Cc: <stable@vger.kernel.org> Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c
@@ -1572,8 +1572,10 @@ static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
 	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
-	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) ||
-	    dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
+	retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (retval)
+		retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (retval) {
 		TW_PRINTK(host, TW_DRIVER, 0x18, "Failed to set dma mask");
 		retval = -ENODEV;
 		goto out_disable_device;
@@ -1804,8 +1806,10 @@ static int twl_resume(struct pci_dev *pdev)
 	pci_set_master(pdev);
 	pci_try_set_mwi(pdev);
 
-	if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) ||
-	    dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) {
+	retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (retval)
+		retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (retval) {
 		TW_PRINTK(host, TW_DRIVER, 0x25, "Failed to set dma mask during resume");
 		retval = -ENODEV;
 		goto out_disable_device;
