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Subject: media: vsp1: Fix runtime PM imbalance on error
Author: Dinghao Liu <dinghao....@zju.edu.cn>
Date: Mon Jun 8 07:29:19 2020 +0200
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....@zju.edu.cn>
Reviewed-by: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
drivers/media/platform/vsp1/vsp1_drv.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/drivers/media/platform/vsp1/vsp1_drv.c
b/drivers/media/platform/vsp1/vsp1_drv.c
index c650e45bb0ad..dc62533cf32c 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -562,7 +562,12 @@ int vsp1_device_get(struct vsp1_device *vsp1)
int ret;
ret = pm_runtime_get_sync(vsp1->dev);
- return ret < 0 ? ret : 0;
+ if (ret < 0) {
+ pm_runtime_put_noidle(vsp1->dev);
+ return ret;
+ }
+
+ return 0;
}
/*
@@ -845,12 +850,12 @@ static int vsp1_probe(struct platform_device *pdev)
/* Configure device parameters based on the version register. */
pm_runtime_enable(&pdev->dev);
- ret = pm_runtime_get_sync(&pdev->dev);
+ ret = vsp1_device_get(vsp1);
if (ret < 0)
goto done;
vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
- pm_runtime_put_sync(&pdev->dev);
+ vsp1_device_put(vsp1);
for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
if ((vsp1->version & VI6_IP_VERSION_MODEL_MASK) ==
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