Thread (396 messages) 396 messages, 10 authors, 2021-05-11
STALE1901d

[PATCH 5.12 235/384] media: sun8i-di: Fix runtime PM imbalance in deinterlace_start_streaming

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-05-10 12:33:19
Also in: lkml
Subsystem: deinterlace drivers for allwinner h3, media input infrastructure (v4l/dvb), the rest · Maintainers: Jernej Skrabec, Mauro Carvalho Chehab, Linus Torvalds

From: Dinghao Liu <redacted>

[ Upstream commit f1995d5e43cf897f63b4d7a7f84a252d891ae820 ]

pm_runtime_get_sync() will increase the runtime 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 <redacted>
Signed-off-by: Hans Verkuil <redacted>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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");
 
-- 
2.30.2


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