From 8f2b6bc79c32f0fa60df000ae387a790ec80eae9 Mon Sep 17 00:00:00 2001
From: Swati Agarwal <swati.agarwal@xilinx.com>
Date: Wed, 17 Aug 2022 11:41:25 +0530
Subject: [PATCH] dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API failure
Git-commit: 8f2b6bc79c32f0fa60df000ae387a790ec80eae9
Patch-mainline: v6.0-rc7
References: git-fixes

The driver does not handle the failure case while calling
dma_set_mask_and_coherent API.

In case of failure, capture the return value of API and then report an
error.

Addresses-coverity: Unchecked return value (CHECKED_RETURN)

Signed-off-by: Swati Agarwal <swati.agarwal@xilinx.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/20220817061125.4720-4-swati.agarwal@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/dma/xilinx/xilinx_dma.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 5e6e46437aea..8cd4e69dc7b4 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -3091,7 +3091,11 @@ static int xilinx_dma_probe(struct platform_device *pdev)
 		xdev->ext_addr = false;
 
 	/* Set the dma mask bits */
-	dma_set_mask_and_coherent(xdev->dev, DMA_BIT_MASK(addr_width));
+	err = dma_set_mask_and_coherent(xdev->dev, DMA_BIT_MASK(addr_width));
+	if (err < 0) {
+		dev_err(xdev->dev, "DMA mask error %d\n", err);
+		goto disable_clks;
+	}
 
 	/* Initialize the DMA engine */
 	xdev->common.dev = &pdev->dev;
-- 
2.35.3