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dmaengine: usb-dmac: Fix PM reference leak in usb_dmac_probe() 

[ 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@huawei.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20210706124521.1371901-1-yukuai3@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yu Kuai 2021-07-06 20:45:21 +08:00 committed by Sasha Levin
parent 9c97a05392
commit 11145efd29
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/sh/usb-dmac.c
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@ -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;
}