drm: Drop plane argument from __drm_atomic_helper_plane_destroy_state

It's unused, and really this helper should only look at the state
structure and nothing else.

v2: Fix commit message (Laurent).

v3: Rebase onto mtk driver merge.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462804451-15318-2-git-send-email-daniel.vetter@ffwll.ch
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 055d547..c6282b4 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2636,7 +2636,7 @@
 void drm_atomic_helper_plane_reset(struct drm_plane *plane)
 {
 	if (plane->state)
-		__drm_atomic_helper_plane_destroy_state(plane, plane->state);
+		__drm_atomic_helper_plane_destroy_state(plane->state);
 
 	kfree(plane->state);
 	plane->state = kzalloc(sizeof(*plane->state), GFP_KERNEL);
@@ -2691,15 +2691,13 @@
 
 /**
  * __drm_atomic_helper_plane_destroy_state - release plane state
- * @plane: plane object
  * @state: plane state object to release
  *
  * Releases all resources stored in the plane state without actually freeing
  * the memory of the plane state. This is useful for drivers that subclass the
  * plane state.
  */
-void __drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
-					     struct drm_plane_state *state)
+void __drm_atomic_helper_plane_destroy_state(struct drm_plane_state *state)
 {
 	if (state->fb)
 		drm_framebuffer_unreference(state->fb);
@@ -2717,7 +2715,7 @@
 void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
 					   struct drm_plane_state *state)
 {
-	__drm_atomic_helper_plane_destroy_state(plane, state);
+	__drm_atomic_helper_plane_destroy_state(state);
 	kfree(state);
 }
 EXPORT_SYMBOL(drm_atomic_helper_plane_destroy_state);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c
index 50185ac..55f1d37 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_plane.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c
@@ -166,7 +166,7 @@
 {
 	struct exynos_drm_plane_state *old_exynos_state =
 					to_exynos_plane_state(old_state);
-	__drm_atomic_helper_plane_destroy_state(plane, old_state);
+	__drm_atomic_helper_plane_destroy_state(old_state);
 	kfree(old_exynos_state);
 }
 
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index c898788..51bc898 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -116,7 +116,7 @@
 static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
 					struct drm_plane_state *state)
 {
-	__drm_atomic_helper_plane_destroy_state(plane, state);
+	__drm_atomic_helper_plane_destroy_state(state);
 	kfree(to_mtk_plane_state(state));
 }
 
diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
index 93ee538..5252ab7 100644
--- a/drivers/gpu/drm/omapdrm/omap_plane.c
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -245,7 +245,7 @@
 static void omap_plane_atomic_destroy_state(struct drm_plane *plane,
 					    struct drm_plane_state *state)
 {
-	__drm_atomic_helper_plane_destroy_state(plane, state);
+	__drm_atomic_helper_plane_destroy_state(state);
 	kfree(to_omap_plane_state(state));
 }
 
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
index 8460ae1..d445e67 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -635,7 +635,7 @@
 static void rcar_du_plane_atomic_destroy_state(struct drm_plane *plane,
 					       struct drm_plane_state *state)
 {
-	__drm_atomic_helper_plane_destroy_state(plane, state);
+	__drm_atomic_helper_plane_destroy_state(state);
 	kfree(to_rcar_plane_state(state));
 }
 
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
index de7ef04..e671a7c 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
@@ -251,7 +251,7 @@
 static void rcar_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane,
 						   struct drm_plane_state *state)
 {
-	__drm_atomic_helper_plane_destroy_state(plane, state);
+	__drm_atomic_helper_plane_destroy_state(state);
 	kfree(to_rcar_vsp_plane_state(state));
 }
 
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 80d0f95..1c4d5b5 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -822,7 +822,7 @@
 {
 	struct vop_plane_state *vop_state = to_vop_plane_state(state);
 
-	__drm_atomic_helper_plane_destroy_state(plane, state);
+	__drm_atomic_helper_plane_destroy_state(state);
 
 	kfree(vop_state);
 }
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 39902bb..39940f5 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -434,7 +434,7 @@
 	struct tegra_plane_state *state;
 
 	if (plane->state)
-		__drm_atomic_helper_plane_destroy_state(plane, plane->state);
+		__drm_atomic_helper_plane_destroy_state(plane->state);
 
 	kfree(plane->state);
 	plane->state = NULL;
@@ -466,7 +466,7 @@
 static void tegra_plane_atomic_destroy_state(struct drm_plane *plane,
 					     struct drm_plane_state *state)
 {
-	__drm_atomic_helper_plane_destroy_state(plane, state);
+	__drm_atomic_helper_plane_destroy_state(state);
 	kfree(state);
 }
 
diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index 7b0c72a..4037b52 100644
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -208,7 +208,7 @@
 	}
 
 	kfree(vc4_state->dlist);
-	__drm_atomic_helper_plane_destroy_state(plane, &vc4_state->base);
+	__drm_atomic_helper_plane_destroy_state(&vc4_state->base);
 	kfree(state);
 }