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From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Benoit Parrot <bparrot@ti.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	linux-media@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] media: ti-vpe: cal: Fix runtime PM imbalance in cal_probe
Date: Thu,  8 Apr 2021 15:08:50 +0800	[thread overview]
Message-ID: <20210408070850.11837-1-dinghao.liu@zju.edu.cn> (raw)

pm_runtime_get_sync() will increase the rumtime PM counter
even it returns an error. Thus a pairing decrement is needed
to prevent refcount leak. Fix this by replacing this API with
pm_runtime_resume_and_get(), which will not change the runtime
PM counter on error.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
 drivers/media/platform/ti-vpe/cal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index fa0931788040..ce4e53b9be10 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -1010,7 +1010,7 @@ static int cal_probe(struct platform_device *pdev)
 
 	/* Read the revision and hardware info to verify hardware access. */
 	pm_runtime_enable(&pdev->dev);
-	ret = pm_runtime_get_sync(&pdev->dev);
+	ret = pm_runtime_resume_and_get(&pdev->dev);
 	if (ret)
 		goto error_pm_runtime;
 
-- 
2.17.1


                 reply	other threads:[~2021-04-08  7:09 UTC|newest]

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