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dmaengine: sh: rcar-dmac: Check for error num after setting mask
Because of the possible failure of the dma_supported(), the
dma_set_mask_and_coherent() may return error num.
Therefore, it should be better to check it and return the error if
fails.
Fixes: dc312349e8
("dmaengine: rcar-dmac: Widen DMA mask to 40 bits")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220106030939.2644320-1-jiasheng@iscas.ac.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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parent
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1 changed files with 3 additions and 1 deletions
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@ -1869,7 +1869,9 @@ static int rcar_dmac_probe(struct platform_device *pdev)
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dmac->dev = &pdev->dev;
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dmac->dev = &pdev->dev;
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platform_set_drvdata(pdev, dmac);
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platform_set_drvdata(pdev, dmac);
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dma_set_max_seg_size(dmac->dev, RCAR_DMATCR_MASK);
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dma_set_max_seg_size(dmac->dev, RCAR_DMATCR_MASK);
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dma_set_mask_and_coherent(dmac->dev, DMA_BIT_MASK(40));
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ret = dma_set_mask_and_coherent(dmac->dev, DMA_BIT_MASK(40));
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if (ret)
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return ret;
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ret = rcar_dmac_parse_of(&pdev->dev, dmac);
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ret = rcar_dmac_parse_of(&pdev->dev, dmac);
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if (ret < 0)
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if (ret < 0)
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