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| author | Qiushi Wu <wu000273@umn.edu> | 2020-06-14 05:56:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 11:05:33 +0300 |
| commit | c772cb1c8c15bd5bfb294cf432f902dfd9e7a696 (patch) | |
| tree | 1ad5c2585038d5dfdc8b08f9f30bd3ffddf95338 | |
| parent | 3af18152d6802b9f95fc04cd7eec5dc13b6cfe2f (diff) | |
| download | linux-c772cb1c8c15bd5bfb294cf432f902dfd9e7a696.tar.xz | |
media: ti-vpe: Fix a missing check and reference count leak
[ Upstream commit 7dae2aaaf432767ca7aa11fa84643a7c2600dbdd ]
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_noidle() is not called in error handling paths.
And also, when the call of function vpe_runtime_get() failed,
we won't call vpe_runtime_put().
Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails
inside vpe_runtime_get().
Fixes: 4571912743ac ("[media] v4l: ti-vpe: Add VPE mem to mem driver")
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>
| -rw-r--r-- | drivers/media/platform/ti-vpe/vpe.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c index dbb4829acc43..360a2ad14ce4 100644 --- a/drivers/media/platform/ti-vpe/vpe.c +++ b/drivers/media/platform/ti-vpe/vpe.c @@ -2133,6 +2133,8 @@ static int vpe_runtime_get(struct platform_device *pdev) r = pm_runtime_get_sync(&pdev->dev); WARN_ON(r < 0); + if (r) + pm_runtime_put_noidle(&pdev->dev); return r < 0 ? r : 0; } |