dmaengine: bcm2835: Print error in case setting DMA mask fails

[ Upstream commit 72503b25ee363827aafffc3e8d872e6a92a7e422 ]

During enabling of the RPi 4, we found out that the driver doesn't provide
a helpful error message in case setting DMA mask fails. So add one.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/1563297318-4900-1-git-send-email-wahrenst@gmx.net
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index 996c4b00d323ed5c2dd6455f80eb36ed8e9a8b23..d6cdc3be03fccf12cf9454931be2e9f9daddd6a3 100644 (file)
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -595,8 +595,10 @@ static int bcm2835_dma_probe(struct platform_device *pdev)
                pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
 
        rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
-       if (rc)
+       if (rc) {
+               dev_err(&pdev->dev, "Unable to set DMA mask\n");
                return rc;
+       }
 
        od = devm_kzalloc(&pdev->dev, sizeof(*od), GFP_KERNEL);
        if (!od)