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* [PATCH] media: vsp1: Fix runtime PM imbalance in vsp1_probe
@ 2020-05-23 11:54 Dinghao Liu
  0 siblings, 0 replies; only message in thread
From: Dinghao Liu @ 2020-05-23 11:54 UTC (permalink / raw)
  To: dinghao.liu, kjlu
  Cc: Laurent Pinchart, Kieran Bingham, Mauro Carvalho Chehab,
	linux-media, linux-renesas-soc, 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/vsp1/vsp1_drv.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index c650e45bb0ad..017a54f2fdd8 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -846,8 +846,10 @@ static int vsp1_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 
 	ret = pm_runtime_get_sync(&pdev->dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put_sync(&pdev->dev);
 		goto done;
+	}
 
 	vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
 	pm_runtime_put_sync(&pdev->dev);
-- 
2.17.1


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2020-05-23 11:54 [PATCH] media: vsp1: Fix runtime PM imbalance in vsp1_probe Dinghao Liu

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