dmaengine: altera-msgdma: Remove useless DMA-32 fallback configuration

As stated in [1], dma_set_mask() with a 64-bit mask never fails if
dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.

Simplify code and remove some dead code accordingly.

[1]: https://lore.kernel.org/linux-kernel/YL3vSPK5DXTNvgdx@infradead.org/#t

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Stefan Roese <sr@denx.de>
Acked-by: Olivier Dautricourt <olivier.dautricourt@orolia.com>
Link: https://lore.kernel.org/r/01058ada3a0dea207212182ca7525060a204f1e1.1642232423.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/altera-msgdma.c b/drivers/dma/altera-msgdma.c
index f5b885d69cd3c9ec97420851bcf8d22d402764df..6f56dfd375e3ad33132f7e5020327f1eb5c1858e 100644 (file)
--- a/drivers/dma/altera-msgdma.c
+++ b/drivers/dma/altera-msgdma.c
@@ -891,9 +891,7 @@ static int msgdma_probe(struct platform_device *pdev)
        ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
        if (ret) {
                dev_warn(&pdev->dev, "unable to set coherent mask to 64");
-               ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
-               if (ret)
-                       goto fail;
+               goto fail;
        }
 
        msgdma_reset(mdev);