scsi: hisi_sas: fix calls to dma_set_mask_and_coherent()

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: e4db40e7a1a2 ("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>
Gbp-Pq: Topic bugfix/arm64/huawei-taishan
Gbp-Pq: Name 0033-scsi-hisi_sas-fix-calls-to-dma_set_mask_and_coherent.patch

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 3c03de9d18ddf9c806ebb15c8c2a4155f864b8ba..8aeb92d9144e116ea702c005f1ab207b9f21d892 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2339,6 +2339,7 @@ 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) {
@@ -2359,8 +2360,11 @@ 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
index 6d584f232204ba110a0b74216b1ffb8d12f484aa..434f017afadc321baa6de4485b8d5d0fc46c44c4 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -2328,10 +2328,12 @@ 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;
        }