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From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	linux-media@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] media: sun8i-di: Fix rumtime PM imbalance in deinterlace_start_streaming
Date: Wed,  7 Apr 2021 13:46:06 +0800	[thread overview]
Message-ID: <20210407054606.6252-1-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/sunxi/sun8i-di/sun8i-di.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c b/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c
index ed863bf5ea80..671e4a928993 100644
--- a/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c
+++ b/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c
@@ -589,7 +589,7 @@ static int deinterlace_start_streaming(struct vb2_queue *vq, unsigned int count)
 	int ret;
 
 	if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
-		ret = pm_runtime_get_sync(dev);
+		ret = pm_runtime_resume_and_get(dev);
 		if (ret < 0) {
 			dev_err(dev, "Failed to enable module\n");
 
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Dinghao Liu <dinghao.liu@zju.edu.cn>
To: dinghao.liu@zju.edu.cn, kjlu@umn.edu
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	linux-media@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] media: sun8i-di: Fix rumtime PM imbalance in deinterlace_start_streaming
Date: Wed,  7 Apr 2021 13:46:06 +0800	[thread overview]
Message-ID: <20210407054606.6252-1-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/sunxi/sun8i-di/sun8i-di.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c b/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c
index ed863bf5ea80..671e4a928993 100644
--- a/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c
+++ b/drivers/media/platform/sunxi/sun8i-di/sun8i-di.c
@@ -589,7 +589,7 @@ static int deinterlace_start_streaming(struct vb2_queue *vq, unsigned int count)
 	int ret;
 
 	if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
-		ret = pm_runtime_get_sync(dev);
+		ret = pm_runtime_resume_and_get(dev);
 		if (ret < 0) {
 			dev_err(dev, "Failed to enable module\n");
 
-- 
2.17.1


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             reply	other threads:[~2021-04-07  5:46 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07  5:46 Dinghao Liu [this message]
2021-04-07  5:46 ` [PATCH] media: sun8i-di: Fix rumtime PM imbalance in deinterlace_start_streaming Dinghao Liu

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