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media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync

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[ Upstream commit c47f7c779e ]

On calling pm_runtime_get_sync() the reference count of the device
is incremented. In case of failure, decrement the
reference count before returning the error.

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Qiushi Wu
2020-06-14 05:10:58 +02:00
committed by Greg Kroah-Hartman
parent 72818356f1
commit 93705ea75c
1 changed files with 3 additions and 1 deletions
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4
drivers/media/platform/exynos4-is/media-dev.c
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@@ -481,8 +481,10 @@ static int fimc_md_register_sensor_entities(struct fimc_md *fmd)
return -ENXIO;
ret = pm_runtime_get_sync(fmd->pmf);
if (ret < 0)
if (ret < 0) {
pm_runtime_put(fmd->pmf);
return ret;
}
fmd->num_sensors = 0;