Check return values of dma_set_mask_and_coherent().
Otherwise, if dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
fails, the following piece of code will be executed even when the call
to dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); returns 0:
dev_err(&pdev->dev, "DMA mask error %d\n", rc);
goto err_out_regions;
Addresses-Coverity-ID: 1474553 ("Unchecked return value")
Fixes: 138126214868 ("skd: switch to the generic DMA API")
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
drivers/block/skd_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 7c5fc69..2459dcc 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -3175,7 +3175,7 @@ static int skd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out;
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (rc)
- dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (rc) {
dev_err(&pdev->dev, "DMA mask error %d\n", rc);
goto err_out_regions;
@@ -3364,7 +3364,7 @@ static int skd_pci_resume(struct pci_dev *pdev)
goto err_out;
rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (rc)
- dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (rc) {
dev_err(&pdev->dev, "DMA mask error %d\n", rc);
goto err_out_regions;
--
2.7.4
