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Date: Mon, 27 Jan 2020 09:53:31 +0100 From: Amelie Delaunay <amelie.delaunay@...com> To: Vinod Koul <vkoul@...nel.org>, Dan Williams <dan.j.williams@...el.com>, Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...com> CC: <dmaengine@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, Amelie Delaunay <amelie.delaunay@...com>, Pierre-Yves MORDRET <pierre-yves.mordret@...com> Subject: [PATCH 3/6] dmaengine: stm32-mdma: disable clock in case of error during probe From: Etienne Carriere <etienne.carriere@...com> This patch disables the clock in case of error during probe. The unneeded err_unregister label is renamed err_clk instead. Signed-off-by: Etienne Carriere <etienne.carriere@...com> Signed-off-by: Amelie Delaunay <amelie.delaunay@...com> --- drivers/dma/stm32-mdma.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c index a0fb80dfb2e9..f23c82e3990c 100644 --- a/drivers/dma/stm32-mdma.c +++ b/drivers/dma/stm32-mdma.c @@ -1637,25 +1637,27 @@ static int stm32_mdma_probe(struct platform_device *pdev) } dmadev->irq = platform_get_irq(pdev, 0); - if (dmadev->irq < 0) - return dmadev->irq; + if (dmadev->irq < 0) { + ret = dmadev->irq; + goto err_clk; + } ret = devm_request_irq(&pdev->dev, dmadev->irq, stm32_mdma_irq_handler, 0, dev_name(&pdev->dev), dmadev); if (ret) { dev_err(&pdev->dev, "failed to request IRQ\n"); - return ret; + goto err_clk; } ret = dmaenginem_async_device_register(dd); if (ret) - return ret; + goto err_clk; ret = of_dma_controller_register(of_node, stm32_mdma_of_xlate, dmadev); if (ret < 0) { dev_err(&pdev->dev, "STM32 MDMA DMA OF registration failed %d\n", ret); - goto err_unregister; + goto err_clk; } platform_set_drvdata(pdev, dmadev); @@ -1668,7 +1670,9 @@ static int stm32_mdma_probe(struct platform_device *pdev) return 0; -err_unregister: +err_clk: + clk_disable_unprepare(dmadev->clk); + return ret; } -- 2.17.1
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