Re: [PATCH v5 09/16] drm/mediatek: Use pm_runtime_resume_and_get for PM get_sync

Matthias Brugger
2021-06-09T14:29:36Z

On 10/04/2021 11:11, Yong Wu wrote:
> pm_runtime_get_sync will increment pm usage counter even it failed.
> This patch use pm_runtime_resume_and_get instead of pm_runtime_get
> to keep usage counter balanced.
>
> Signed-off-by: Yong Wu <yong.wu@mediatek.com>

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
> drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 8b0de90156c6..69d23ce56d2c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -259,7 +259,7 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc)
> drm_connector_list_iter_end(&conn_iter);
> }
>
> - ret = pm_runtime_get_sync(crtc->dev->dev);
> + ret = pm_runtime_resume_and_get(crtc->dev->dev);
> if (ret < 0) {
> DRM_ERROR("Failed to enable power domain: %d\n", ret);
> return ret;
>