[PATCH] drm/rockchip: Remove unused variable

[Maxime Ripard <maxime@cerno.tech>]

Commit 977697e20b3d ("drm/atomic: Pass the full state to planes atomic
disable and update") added the old_state variable instead of what used
to be a parameter, but it also removed the sole user of that variable in
the vop_plane_atomic_update function leading to an usused variable.
Remove it.

Fixes: 977697e20b3d ("drm/atomic: Pass the full state to planes atomic disable and update")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 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;
-- 
2.30.2