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* [PATCH] media: camss: ispif: Fix runtime PM imbalance on error
@ 2020-05-21 12:06 Dinghao Liu
  0 siblings, 0 replies; only message in thread
From: Dinghao Liu @ 2020-05-21 12:06 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-ispif.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss-ispif.c b/drivers/media/platform/qcom/camss/camss-ispif.c
index 1f33b4eb198c..5722e971b184 100644
--- a/drivers/media/platform/qcom/camss/camss-ispif.c
+++ b/drivers/media/platform/qcom/camss/camss-ispif.c
@@ -344,8 +344,10 @@ static int ispif_set_power(struct v4l2_subdev *sd, int on)
 		}
 
 		ret = pm_runtime_get_sync(dev);
-		if (ret < 0)
+		if (ret < 0) {
+			pm_runtime_put_sync(dev);
 			goto exit;
+		}
 
 		ret = camss_enable_clocks(ispif->nclocks, ispif->clock, dev);
 		if (ret < 0) {
-- 
2.17.1


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2020-05-21 12:06 [PATCH] media: camss: ispif: Fix runtime PM imbalance on error Dinghao Liu

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