From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Dan Williams <dan.j.williams@intel.com>,
Vinod Koul <vkoul@kernel.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Stephen Boyd <swboyd@chromium.org>,
Baolin Wang <baolin.wang@linaro.org>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] dmaengine: sh: usb-dmac: Fix runtime PM imbalance on error
Date: Fri, 22 May 2020 18:45:19 +0800 [thread overview]
Message-ID: <20200522104521.29409-1-dinghao.liu@zju.edu.cn> (raw)
pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
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 b218a013c260..1485c2fd7c85 100644
--- a/drivers/dma/sh/usb-dmac.c
+++ b/drivers/dma/sh/usb-dmac.c
@@ -853,8 +853,8 @@ 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;
}
--
2.17.1
reply other threads:[~2020-05-22 10:45 UTC|newest]
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