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* [PATCH] media: camss: csid: Fix runtime PM imbalance in csid_set_power
@ 2020-05-23  7:36 Dinghao Liu
  0 siblings, 0 replies; only message in thread
From: Dinghao Liu @ 2020-05-23  7:36 UTC (permalink / raw)
  To: dinghao.liu, kjlu
  Cc: Todor Tomov, Andy Gross, Bjorn Andersson, Mauro Carvalho Chehab,
	linux-media, linux-arm-msm, linux-kernel

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/media/platform/qcom/camss/camss-csid.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index a5ae85674ffb..8a247b6f5550 100644
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -562,8 +562,10 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
 		u32 hw_version;
 
 		ret = pm_runtime_get_sync(dev);
-		if (ret < 0)
+		if (ret < 0) {
+			pm_runtime_put_sync(dev);
 			return ret;
+		}
 
 		ret = regulator_enable(csid->vdda);
 		if (ret < 0) {
-- 
2.17.1


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2020-05-23  7:36 [PATCH] media: camss: csid: Fix runtime PM imbalance in csid_set_power Dinghao Liu

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