From: wu000273@umn.edu
To: kjlu@umn.edu
Cc: wu000273@umn.edu, Kyungmin Park <kyungmin.park@samsung.com>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Kukjin Kim <kgene@kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-media@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync
Date: Sat, 13 Jun 2020 22:10:58 -0500 [thread overview]
Message-ID: <20200614031058.30161-1-wu000273@umn.edu> (raw)
From: Qiushi Wu <wu000273@umn.edu>
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>
---
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 9aaf3b8060d5..cfb6891180b0 100644
--- a/drivers/media/platform/exynos4-is/media-dev.c
+++ b/drivers/media/platform/exynos4-is/media-dev.c
@@ -484,8 +484,10 @@ 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;
--
2.17.1
reply other threads:[~2020-06-14 3:11 UTC|newest]
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