dmaengine: qcom_hidma: 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>
Link: https://lore.kernel.org/r/4deb32b0c7838da66608022c584326eb01d0da03.1642232106.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c
index 65d054b..51587cf 100644 (file)
--- a/drivers/dma/qcom/hidma.c
+++ b/drivers/dma/qcom/hidma.c
@@ -838,9 +838,7 @@ static int hidma_probe(struct platform_device *pdev)
        rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
        if (rc) {
                dev_warn(&pdev->dev, "unable to set coherent mask to 64");
-               rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
-               if (rc)
-                       goto dmafree;
+               goto dmafree;
        }
 
        dmadev->lldev = hidma_ll_init(dmadev->ddev.dev,