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Subject[PATCH v3 25/79] staging: media: vde: use pm_runtime_resume_and_get()
Date
Commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
added pm_runtime_resume_and_get() in order to automatically handle
dev->power.usage_count decrement on errors.

Use the new API, in order to cleanup the error check logic.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
drivers/staging/media/tegra-vde/vde.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/media/tegra-vde/vde.c b/drivers/staging/media/tegra-vde/vde.c
index 28845b5bafaf..8936f140a246 100644
--- a/drivers/staging/media/tegra-vde/vde.c
+++ b/drivers/staging/media/tegra-vde/vde.c
@@ -775,9 +775,9 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
if (ret)
goto release_dpb_frames;

- ret = pm_runtime_get_sync(dev);
+ ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
- goto put_runtime_pm;
+ goto unlock;

/*
* We rely on the VDE registers reset value, otherwise VDE
@@ -843,6 +843,8 @@ static int tegra_vde_ioctl_decode_h264(struct tegra_vde *vde,
put_runtime_pm:
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
+
+unlock:
mutex_unlock(&vde->lock);

release_dpb_frames:
@@ -1069,8 +1071,8 @@ static int tegra_vde_probe(struct platform_device *pdev)
* power-cycle it in order to put hardware into a predictable lower
* power state.
*/
- pm_runtime_get_sync(dev);
- pm_runtime_put(dev);
+ if (pm_runtime_resume_and_get(dev) >= 0)
+ pm_runtime_put(dev);

return 0;

@@ -1088,8 +1090,9 @@ static int tegra_vde_remove(struct platform_device *pdev)
{
struct tegra_vde *vde = platform_get_drvdata(pdev);
struct device *dev = &pdev->dev;
+ int ret;

- pm_runtime_get_sync(dev);
+ ret = pm_runtime_resume_and_get(dev);
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);

@@ -1097,7 +1100,8 @@ static int tegra_vde_remove(struct platform_device *pdev)
* Balance RPM state, the VDE power domain is left ON and hardware
* is clock-gated. It's safe to reboot machine now.
*/
- pm_runtime_put_noidle(dev);
+ if (ret >= 0)
+ pm_runtime_put_noidle(dev);
clk_disable_unprepare(vde->clk);

misc_deregister(&vde->miscdev);
--
2.30.2
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