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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Swati Agarwal <swati.agarwal@xilinx.com>,
	Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>,
	Vinod Koul <vkoul@kernel.org>, Sasha Levin <sashal@kernel.org>,
	michal.simek@xilinx.com, lars@metafoo.de,
	adrianml@alumnos.upm.es, shravya.kumbham@xilinx.com,
	dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 5.15 07/20] dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API failure
Date: Sun,  2 Oct 2022 18:50:46 -0400	[thread overview]
Message-ID: <20221002225100.239217-7-sashal@kernel.org> (raw)
In-Reply-To: <20221002225100.239217-1-sashal@kernel.org>

From: Swati Agarwal <swati.agarwal@xilinx.com>

[ Upstream commit 8f2b6bc79c32f0fa60df000ae387a790ec80eae9 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 cc7d54f19fb8..4273150b68dc 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -3088,7 +3088,11 @@ 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;
-- 
2.35.1


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      parent reply	other threads:[~2022-10-02 22:55 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-02 22:50 [PATCH AUTOSEL 5.15 01/20] firmware: arm_scmi: Improve checks in the info_get operations Sasha Levin
2022-10-02 22:50 ` [PATCH AUTOSEL 5.15 02/20] firmware: arm_scmi: Harden accesses to the sensor domains Sasha Levin
2022-10-02 22:50 ` [PATCH AUTOSEL 5.15 03/20] firmware: arm_scmi: Harden accesses to the reset domains Sasha Levin
2022-10-02 22:50 ` [PATCH AUTOSEL 5.15 04/20] firmware: arm_scmi: Add SCMI PM driver remove routine Sasha Levin
2022-10-02 22:50 ` [PATCH AUTOSEL 5.15 05/20] dmaengine: xilinx_dma: Fix devm_platform_ioremap_resource error handling Sasha Levin
2022-10-02 22:50 ` [PATCH AUTOSEL 5.15 06/20] dmaengine: xilinx_dma: cleanup for fetching xlnx,num-fstores property Sasha Levin
2022-10-02 22:50 ` Sasha Levin [this message]

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