scsi: hisi_sas: fix calls to dma_set_mask_and_coherent()

hreinecke · martinkpetersen · commit d9a00459effc · 2019-02-25T21:44:40.000-05:00
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. [mkp: fixed commit message] Fixes: e4db40e ("scsi: hisi_sas: use dma_set_mask_and_coherent") Cc: <stable@vger.kernel.org> Suggested-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2323,6 +2323,7 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
 	struct Scsi_Host *shost;
 	struct hisi_hba *hisi_hba;
 	struct device *dev = &pdev->dev;
+	int error;
 
 	shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
 	if (!shost) {
@@ -2343,8 +2344,11 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
 	if (hisi_sas_get_fw_info(hisi_hba) < 0)
 		goto err_out;
 
-	if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
-	    dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
+	error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
+	if (error)
+		error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
+
+	if (error) {
 		dev_err(dev, "No usable DMA addressing method\n");
 		goto err_out;
 	}
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -2447,10 +2447,12 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	if (rc)
 		goto err_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))) {
+	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (rc)
+		rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (rc) {
 		dev_err(dev, "No usable DMA addressing method\n");
-		rc = -EIO;
+		rc = -ENODEV;
 		goto err_out_regions;
 	}
 
