This is a note to let you know that I've just added the patch titled
media: camss: Fix a reference count leak.
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-camss-fix-a-reference-count-leak.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b75cae197a8261e415cf0ed660c36fbe82c1fb18
Author: Qiushi Wu <wu000273@xxxxxxx>
Date: Sun Jun 14 01:27:12 2020 +0200
media: camss: Fix a reference count leak.
[ Upstream commit d0675b67b42eb4f1a840d1513b5b00f78312f833 ]
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: 02afa816dbbf ("media: camss: Add basic runtime PM support")
Signed-off-by: Qiushi Wu <wu000273@xxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.c b/drivers/media/platform/qcom/camss/camss-csiphy.c
index 008afb85023be..3c5b9082ad723 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.c
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.c
@@ -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) {
