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media: camss: Fix a reference count leak.

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pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code, causing incorrect ref count if
PM runtime put is not called in error handling paths.
Thus call pm_runtime_put_sync() if pm_runtime_get_sync() fails.

Fixes: 02afa816db ("media: camss: Add basic runtime PM support")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Qiushi Wu 2020-06-14 01:27:12 +02:00 committed by Mauro Carvalho Chehab
parent 63e36a381d
commit d0675b67b4
1 changed files with 3 additions and 1 deletions
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4
drivers/media/platform/qcom/camss/camss-csiphy.c
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@ -176,8 +176,10 @@ static int csiphy_set_power(struct v4l2_subdev *sd, int on)
int ret;
ret = pm_runtime_get_sync(dev);
if (ret < 0)
if (ret < 0) {
pm_runtime_put_sync(dev);
return ret;
}
ret = csiphy_set_clock_rates(csiphy);
if (ret < 0) {