From 43f0633f89947df57fe0b5025bdd741768007708 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Mon, 6 Dec 2021 03:22:01 +0100
Subject: [PATCH] media: coda/imx-vdoa: Handle dma_set_coherent_mask error codes
Git-commit: 43f0633f89947df57fe0b5025bdd741768007708
Patch-mainline: v5.17-rc1
References: git-fixes

The return value of dma_set_coherent_mask() is not always 0.
To catch the exception in case that dma is not support the mask.

Link: https://lore.kernel.org/linux-media/20211206022201.1639460-1-jiasheng@iscas.ac.cn
Fixes: b0444f18e0b1 ("[media] coda: add i.MX6 VDOA driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/media/platform/coda/imx-vdoa.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/coda/imx-vdoa.c b/drivers/media/platform/coda/imx-vdoa.c
index 6996d4571e36..00643f37b3e6 100644
--- a/drivers/media/platform/coda/imx-vdoa.c
+++ b/drivers/media/platform/coda/imx-vdoa.c
@@ -287,7 +287,11 @@ static int vdoa_probe(struct platform_device *pdev)
 	struct resource *res;
 	int ret;
 
-	dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+	ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret) {
+		dev_err(&pdev->dev, "DMA enable failed\n");
+		return ret;
+	}
 
 	vdoa = devm_kzalloc(&pdev->dev, sizeof(*vdoa), GFP_KERNEL);
 	if (!vdoa)
-- 
2.31.1