On Fri, May 21, 2021 at 05:06:06PM +0800, Tian Tao wrote:
> use pm_runtime_resume_and_get() to replace pm_runtime_get_sync and
> pm_runtime_put_noidle.
It would be good to explain why: Apparently get_sync increments the
refcount even if it fails, which ususally leads to leaks.
With that or similar added to the commit message:
Reviewed-by: Daniel Vetter <daniel.vet...@ffwll.ch>
>
> Signed-off-by: Tian Tao <tiant...@hisilicon.com>
> ---
>
> v2: drop unnecessary change about if condition.
> ---
> drivers/gpu/drm/exynos/exynos_drm_mic.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c
> b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> index 3821ea7..32672bf 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
> @@ -268,11 +268,9 @@ static void mic_pre_enable(struct drm_bridge *bridge)
> if (mic->enabled)
> goto unlock;
>
> - ret = pm_runtime_get_sync(mic->dev);
> - if (ret < 0) {
> - pm_runtime_put_noidle(mic->dev);
> + ret = pm_runtime_resume_and_get(mic->dev);
> + if (ret < 0)
> goto unlock;
> - }
>
> mic_set_path(mic, 1);
>
> --
> 2.7.4
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
