From eb9436966fdc84cebdf222952a99898ab46d9bb0 Mon Sep 17 00:00:00 2001 From: Tobias Jordan Date: Wed, 6 Dec 2017 14:28:27 +0100 Subject: dmaengine: jz4740: disable/unprepare clk if probe fails in error path of jz4740_dma_probe(), call clk_disable_unprepare() to clean up. Found by Linux Driver Verification project (linuxtesting.org). Fixes: 25ce6c35fea0 MIPS: jz4740: Remove custom DMA API Signed-off-by: Tobias Jordan Signed-off-by: Vinod Koul --- drivers/dma/dma-jz4740.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/dma/dma-jz4740.c b/drivers/dma/dma-jz4740.c index d50273fed715..afd5e10f8927 100644 --- a/drivers/dma/dma-jz4740.c +++ b/drivers/dma/dma-jz4740.c @@ -555,7 +555,7 @@ static int jz4740_dma_probe(struct platform_device *pdev) ret = dma_async_device_register(dd); if (ret) - return ret; + goto err_clk; irq = platform_get_irq(pdev, 0); ret = request_irq(irq, jz4740_dma_irq, 0, dev_name(&pdev->dev), dmadev); @@ -568,6 +568,8 @@ static int jz4740_dma_probe(struct platform_device *pdev) err_unregister: dma_async_device_unregister(dd); +err_clk: + clk_disable_unprepare(dmadev->clk); return ret; } -- cgit v1.2.3