[PATCH -next] drm/rockchip: remove unused variable 'old_state'

[Bixuan Cui]

Fix the warning:

    drivers/gpu/drm/rockchip/rockchip_drm_vop.c:882:26:warning: unused variable 
‘old_state’ [-Wunused-variable]
      struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,

Signed-off-by: Bixuan Cui <cuibix...@huawei.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 81c70d7a0471..64469439ddf2 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -879,8 +879,6 @@ static void vop_plane_atomic_disable(struct drm_plane 
*plane,
 static void vop_plane_atomic_update(struct drm_plane *plane,
                struct drm_atomic_state *state)
 {
-       struct drm_plane_state *old_state = 
drm_atomic_get_old_plane_state(state,
-                                                                          
plane);
        struct drm_plane_state *new_state = 
drm_atomic_get_new_plane_state(state,
                                                                           
plane);
        struct drm_crtc *crtc = new_state->crtc;
-- 
2.17.1