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Message-Id: <20201018192635.4056198-5-sashal@kernel.org>
Date: Sun, 18 Oct 2020 15:25:59 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Qiushi Wu <wu000273@....edu>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
Sasha Levin <sashal@...nel.org>, linux-media@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 05/41] media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync
From: Qiushi Wu <wu000273@....edu>
[ 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@....edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/media/platform/exynos4-is/media-dev.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c
index cdaf3a8e2555e..b0289fca854cd 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -477,8 +477,10 @@ 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;
--
2.25.1
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