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dmaengine: jz4740: disable/unprepare clk if probe fails
[ Upstream commiteb9436966f
] in error path of jz4740_dma_probe(), call clk_disable_unprepare() to clean up. Found by Linux Driver Verification project (linuxtesting.org). Fixes:25ce6c35fe
MIPS: jz4740: Remove custom DMA API Signed-off-by: Tobias Jordan <Tobias.Jordan@elektrobit.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 3 additions and 1 deletions
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@ -555,7 +555,7 @@ static int jz4740_dma_probe(struct platform_device *pdev)
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ret = dma_async_device_register(dd);
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if (ret)
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return ret;
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goto err_clk;
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irq = platform_get_irq(pdev, 0);
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ret = request_irq(irq, jz4740_dma_irq, 0, dev_name(&pdev->dev), dmadev);
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@ -568,6 +568,8 @@ static int jz4740_dma_probe(struct platform_device *pdev)
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err_unregister:
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dma_async_device_unregister(dd);
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err_clk:
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clk_disable_unprepare(dmadev->clk);
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return ret;
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}
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