[PATCH 2/3] drm/rockchip: vop: fix reference leak when pm_runtime_get_sync fails

[Qinglang Miao]

pm_runtime_get_sync will increment pm usage counter even
failed. Forgetting to putting operation will result in a
reference leak here.

Replace it with pm_runtime_resume_and_get to keep usage
counter balanced.

Fixes: 5e570373c015 ("drm/rockchip: vop: Enable pm domain before vop_initial")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Qinglang Miao <miaoqingl...@huawei.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index c80f7d9fd..006988a6e 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -587,7 +587,7 @@ static int vop_enable(struct drm_crtc *crtc, struct 
drm_crtc_state *old_state)
        struct vop *vop = to_vop(crtc);
        int ret, i;
 
-       ret = pm_runtime_get_sync(vop->dev);
+       ret = pm_runtime_resume_and_get(vop->dev);
        if (ret < 0) {
                DRM_DEV_ERROR(vop->dev, "failed to get pm runtime: %d\n", ret);
                return ret;
@@ -1908,7 +1908,7 @@ static int vop_initial(struct vop *vop)
                return PTR_ERR(vop->dclk);
        }
 
-       ret = pm_runtime_get_sync(vop->dev);
+       ret = pm_runtime_resume_and_get(vop->dev);
        if (ret < 0) {
                DRM_DEV_ERROR(vop->dev, "failed to get pm runtime: %d\n", ret);
                return ret;
-- 
2.23.0