From 05f4fae9a2f5785d180b48ee93d7fa75425091c3 Mon Sep 17 00:00:00 2001 From: Dongliang Mu Date: Wed, 20 Oct 2021 22:35:33 +0800 Subject: dmaengine: rcar-dmac: refactor the error handling code of rcar_dmac_probe In rcar_dmac_probe, if pm_runtime_resume_and_get fails, it forgets to disable runtime PM. And of_dma_controller_free should only be invoked after the success of of_dma_controller_register. Fix this by refactoring the error handling code. Signed-off-by: Dongliang Mu Reviewed-by: Laurent Pinchart Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20211020143546.3436205-1-mudongliangabcd@gmail.com Signed-off-by: Vinod Koul --- drivers/dma/sh/rcar-dmac.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers/dma') diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 6885b3dcd7a9..5c7716fd6bc5 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -1916,7 +1916,7 @@ static int rcar_dmac_probe(struct platform_device *pdev) ret = pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) { dev_err(&pdev->dev, "runtime PM get sync failed (%d)\n", ret); - return ret; + goto err_pm_disable; } ret = rcar_dmac_init(dmac); @@ -1924,7 +1924,7 @@ static int rcar_dmac_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "failed to reset device\n"); - goto error; + goto err_pm_disable; } /* Initialize engine */ @@ -1958,14 +1958,14 @@ static int rcar_dmac_probe(struct platform_device *pdev) for_each_rcar_dmac_chan(i, dmac, chan) { ret = rcar_dmac_chan_probe(dmac, chan); if (ret < 0) - goto error; + goto err_pm_disable; } /* Register the DMAC as a DMA provider for DT. */ ret = of_dma_controller_register(pdev->dev.of_node, rcar_dmac_of_xlate, NULL); if (ret < 0) - goto error; + goto err_pm_disable; /* * Register the DMA engine device. @@ -1974,12 +1974,13 @@ static int rcar_dmac_probe(struct platform_device *pdev) */ ret = dma_async_device_register(engine); if (ret < 0) - goto error; + goto err_dma_free; return 0; -error: +err_dma_free: of_dma_controller_free(pdev->dev.of_node); +err_pm_disable: pm_runtime_disable(&pdev->dev); return ret; } -- cgit