From: Stefan Wahren wahrenst@gmx.net
[ 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 --- drivers/dma/bcm2835-dma.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c index 8101ff2f05c1c..970f654611bdd 100644 --- a/drivers/dma/bcm2835-dma.c +++ b/drivers/dma/bcm2835-dma.c @@ -871,8 +871,10 @@ 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)