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From: wu000273@umn.edu
To: kjlu@umn.edu
Cc: wu000273@umn.edu,
	"Niklas Söderlund" <niklas.soderlund@ragnatech.se>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Hans Verkuil" <hverkuil-cisco@xs4all.nl>,
	"Ulrich Hecht" <uli+renesas@fpond.eu>,
	"Laurent Pinchart" <laurent.pinchart@ideasonboard.com>,
	linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] media: rcar-vin: Fix a reference count leak.
Date: Sat, 13 Jun 2020 18:04:32 -0500	[thread overview]
Message-ID: <20200613230432.13025-1-wu000273@umn.edu> (raw)

From: Qiushi Wu <wu000273@umn.edu>

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus call pm_runtime_put_noidle()
if pm_runtime_get_sync() fails.

Fixes: 2a18fbec1dab ("media: rcar-vin: Move pm_runtime_{get,put} out of helpers")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
---
 drivers/media/platform/rcar-vin/rcar-v4l2.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
index f421e2584875..06808be35f98 100644
--- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
+++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
@@ -835,8 +835,10 @@ static int rvin_open(struct file *file)
 	int ret;
 
 	ret = pm_runtime_get_sync(vin->dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put_noidle(vin->dev);
 		return ret;
+	}
 
 	ret = mutex_lock_interruptible(&vin->lock);
 	if (ret)
-- 
2.17.1


             reply	other threads:[~2020-06-13 23:05 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-13 23:04 wu000273 [this message]
  -- strict thread matches above, loose matches on Subject: below --
2020-06-13 22:30 wu000273
2020-06-16  2:13 ` Laurent Pinchart

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