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| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-04-23 17:19:17 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-05-10 11:36:34 +0200 |
| commit | 59f96244af9403ddf4810ec5c0fbe8920857634e (patch) | |
| tree | 3fae3ffbb88e58f71cbd3cc34b995235fe04ca90 /drivers/media/platform/exynos4-is/fimc-isp-video.c | |
| parent | c44eac5b72e23c31eefc0e10a71d9650036b8341 (diff) | |
| download | linux-59f96244af9403ddf4810ec5c0fbe8920857634e.tar.gz | |
media: exynos4-is: fix pm_runtime_get_sync() usage count
The pm_runtime_get_sync() internally increments the
dev->power.usage_count without decrementing it, even on errors.
On some places, this is ok, but on others the usage count
ended being unbalanced on failures.
Replace it by the new pm_runtime_resume_and_get(), introduced by:
commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
in order to properly decrement the usage counter, avoiding
a potential PM usage counter leak.
As a bonus, such function always return zero on success. So,
some code can be simplified.
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/platform/exynos4-is/fimc-isp-video.c')
| -rw-r--r-- | drivers/media/platform/exynos4-is/fimc-isp-video.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c index 612b9872afc8..8d9dc597deaa 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c @@ -275,7 +275,7 @@ static int isp_video_open(struct file *file) if (ret < 0) goto unlock; - ret = pm_runtime_get_sync(&isp->pdev->dev); + ret = pm_runtime_resume_and_get(&isp->pdev->dev); if (ret < 0) goto rel_fh; @@ -293,7 +293,6 @@ static int isp_video_open(struct file *file) if (!ret) goto unlock; rel_fh: - pm_runtime_put_noidle(&isp->pdev->dev); v4l2_fh_release(file); unlock: mutex_unlock(&isp->video_lock); |