linux-kernel - [PATCH] mtd: rawnand: qcom: Use dma_mapping

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Date:   Mon,  5 Apr 2021 10:39:12 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     miquel.raynal@...tlin.com, richard@....at, vigneshr@...com,
        robh+dt@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        boris.brezillon@...labora.com, Daniele.Palmas@...it.com,
        bjorn.andersson@...aro.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH] mtd: rawnand: qcom: Use dma_mapping_error() for error check

dma_mapping_error() should be used for checking the error value of
dma_map_resource() API.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/mtd/nand/raw/qcom_nandc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
index fe74cf3aece5..07b3c156a802 100644
--- a/drivers/mtd/nand/raw/qcom_nandc.c
+++ b/drivers/mtd/nand/raw/qcom_nandc.c
@@ -2990,7 +2990,7 @@ static int qcom_nandc_probe(struct platform_device *pdev)
 	nandc->base_dma = dma_map_resource(dev, res->start,
 					   resource_size(res),
 					   DMA_BIDIRECTIONAL, 0);
-	if (!nandc->base_dma)
+	if (dma_mapping_error(dev, nandc->base_dma))
 		return -ENXIO;
 
 	ret = qcom_nandc_alloc(nandc);
-- 
2.25.1