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Date: Tue, 10 Aug 2021 10:15:20 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Yu Kuai <yukuai3@...wei.com>, Hulk Robot <hulkci@...wei.com>, Vinod Koul <vkoul@...nel.org>, Sasha Levin <sashal@...nel.org>, dmaengine@...r.kernel.org Subject: [PATCH AUTOSEL 5.10 02/20] dmaengine: usb-dmac: Fix PM reference leak in usb_dmac_probe() From: Yu Kuai <yukuai3@...wei.com> [ Upstream commit 1da569fa7ec8cb0591c74aa3050d4ea1397778b4 ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. Fix it by moving the error_pm label above the pm_runtime_put() in the error path. Reported-by: Hulk Robot <hulkci@...wei.com> Signed-off-by: Yu Kuai <yukuai3@...wei.com> Link: https://lore.kernel.org/r/20210706124521.1371901-1-yukuai3@huawei.com Signed-off-by: Vinod Koul <vkoul@...nel.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/dma/sh/usb-dmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c index 8f7ceb698226..1cc06900153e 100644 --- a/drivers/dma/sh/usb-dmac.c +++ b/drivers/dma/sh/usb-dmac.c @@ -855,8 +855,8 @@ static int usb_dmac_probe(struct platform_device *pdev) error: of_dma_controller_free(pdev->dev.of_node); - pm_runtime_put(&pdev->dev); error_pm: + pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); return ret; } -- 2.30.2
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