This is a note to let you know that I've just added the patch titled media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync to the 4.4-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-exynos4-is-fix-a-reference-count-leak-due-to-p.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 73145556d6e212b72af75b2ea0d7e938b97e1e7d Author: Qiushi Wu <wu000273@xxxxxxx> Date: Sun Jun 14 05:10:58 2020 +0200 media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync [ Upstream commit c47f7c779ef0458a58583f00c9ed71b7f5a4d0a2 ] 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@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/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index 6bc3c8a2e1443..76fadd3e3ada2 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -413,8 +413,10 @@ 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;