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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 11:03:02 +0300 |
| commit | 0d35b8ae3006001f4fc260f87a1dcd81ce5f9c1c (patch) | |
| tree | c893c26eb0990cf4078f252cb7aae976064e1545 /drivers/media | |
| parent | a138371ca26b8a9ddf31c19192dbefa085e80307 (diff) | |
| download | linux-0d35b8ae3006001f4fc260f87a1dcd81ce5f9c1c.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>
Diffstat (limited to 'drivers/media')
| -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 b5f8c425cd2e..8a3714bfb77e 100644 --- a/drivers/media/platform/ti-vpe/vpe.c +++ b/drivers/media/platform/ti-vpe/vpe.c @@ -2135,6 +2135,8 @@ 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; } |