From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Fri, 7 Jul 2017 15:55:53 +0100
Subject: drm/armada: store plane in armada_plane_work
Git-commit: eaab01307554175a004ad60728beb691cc841a8c
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Store the plane in the armada_plane_work structure rather than passing
it around; it doesn't get used very much in the work structures, so
passing it around is a needless expense.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/armada/armada_crtc.c    |   27 +++++++++++----------------
 drivers/gpu/drm/armada/armada_crtc.h    |    7 +++----
 drivers/gpu/drm/armada/armada_overlay.c |   12 +++++++-----
 3 files changed, 21 insertions(+), 25 deletions(-)

--- a/drivers/gpu/drm/armada/armada_crtc.c
+++ b/drivers/gpu/drm/armada/armada_crtc.c
@@ -224,7 +224,7 @@ static void armada_drm_plane_work_run(st
 
 	/* Handle any pending frame work. */
 	if (work) {
-		work->fn(dcrtc, dplane, work);
+		work->fn(dcrtc, work);
 		drm_crtc_vblank_put(&dcrtc->crtc);
 	}
 
@@ -232,8 +232,9 @@ static void armada_drm_plane_work_run(st
 }
 
 int armada_drm_plane_work_queue(struct armada_crtc *dcrtc,
-	struct armada_plane *plane, struct armada_plane_work *work)
+	struct armada_plane_work *work)
 {
+	struct armada_plane *plane = drm_to_armada_plane(work->plane);
 	int ret;
 
 	ret = drm_crtc_vblank_get(&dcrtc->crtc);
@@ -263,16 +264,8 @@ void armada_drm_plane_work_cancel(struct
 		drm_crtc_vblank_put(&dcrtc->crtc);
 }
 
-static int armada_drm_crtc_queue_frame_work(struct armada_crtc *dcrtc,
-	struct armada_frame_work *work)
-{
-	struct armada_plane *plane = drm_to_armada_plane(dcrtc->crtc.primary);
-
-	return armada_drm_plane_work_queue(dcrtc, plane, &work->work);
-}
-
 static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc,
-	struct armada_plane *plane, struct armada_plane_work *work)
+	struct armada_plane_work *work)
 {
 	struct armada_frame_work *fwork = container_of(work, struct armada_frame_work, work);
 	struct drm_device *dev = dcrtc->crtc.dev;
@@ -293,7 +286,8 @@ static void armada_drm_crtc_complete_fra
 	kfree(fwork);
 }
 
-static struct armada_frame_work *armada_drm_crtc_alloc_frame_work(void)
+static struct armada_frame_work *
+armada_drm_crtc_alloc_frame_work(struct drm_plane *plane)
 {
 	struct armada_frame_work *work;
 	int i = 0;
@@ -302,6 +296,7 @@ static struct armada_frame_work *armada_
 	if (!work)
 		return NULL;
 
+	work->work.plane = plane;
 	work->work.fn = armada_drm_crtc_complete_frame_work;
 	armada_reg_queue_end(work->regs, i);
 
@@ -322,11 +317,11 @@ static void armada_drm_crtc_finish_fb(st
 		return;
 	}
 
-	work = armada_drm_crtc_alloc_frame_work();
+	work = armada_drm_crtc_alloc_frame_work(dcrtc->crtc.primary);
 	if (work) {
 		work->old_fb = fb;
 
-		if (armada_drm_crtc_queue_frame_work(dcrtc, work) == 0)
+		if (armada_drm_plane_work_queue(dcrtc, work) == 0)
 			return;
 
 		kfree(work);
@@ -1044,7 +1039,7 @@ static int armada_drm_crtc_page_flip(str
 	if (fb->format != crtc->primary->fb->format)
 		return -EINVAL;
 
-	work = armada_drm_crtc_alloc_frame_work();
+	work = armada_drm_crtc_alloc_frame_work(dcrtc->crtc.primary);
 	if (!work)
 		return -ENOMEM;
 
@@ -1061,7 +1056,7 @@ static int armada_drm_crtc_page_flip(str
 	 */
 	drm_framebuffer_get(fb);
 
-	ret = armada_drm_crtc_queue_frame_work(dcrtc, work);
+	ret = armada_drm_plane_work_queue(dcrtc, work);
 	if (ret) {
 		/* Undo our reference above */
 		drm_framebuffer_put(fb);
--- a/drivers/gpu/drm/armada/armada_crtc.h
+++ b/drivers/gpu/drm/armada/armada_crtc.h
@@ -36,9 +36,8 @@ struct armada_plane;
 struct armada_variant;
 
 struct armada_plane_work {
-	void			(*fn)(struct armada_crtc *,
-				      struct armada_plane *,
-				      struct armada_plane_work *);
+	void (*fn)(struct armada_crtc *, struct armada_plane_work *);
+	struct drm_plane *plane;
 };
 
 struct armada_plane_state {
@@ -60,7 +59,7 @@ struct armada_plane {
 
 int armada_drm_plane_init(struct armada_plane *plane);
 int armada_drm_plane_work_queue(struct armada_crtc *dcrtc,
-	struct armada_plane *plane, struct armada_plane_work *work);
+	struct armada_plane_work *work);
 int armada_drm_plane_work_wait(struct armada_plane *plane, long timeout);
 void armada_drm_plane_work_cancel(struct armada_crtc *dcrtc,
 	struct armada_plane *plane);
--- a/drivers/gpu/drm/armada/armada_overlay.c
+++ b/drivers/gpu/drm/armada/armada_overlay.c
@@ -80,11 +80,12 @@ static void armada_ovl_retire_fb(struct
 
 /* === Plane support === */
 static void armada_ovl_plane_work(struct armada_crtc *dcrtc,
-	struct armada_plane *plane, struct armada_plane_work *work)
+	struct armada_plane_work *work)
 {
-	struct armada_ovl_plane *dplane = container_of(plane, struct armada_ovl_plane, base);
+	struct armada_ovl_plane *dplane = container_of(work->plane,
+					struct armada_ovl_plane, base.base);
 
-	trace_armada_ovl_plane_work(&dcrtc->crtc, &plane->base);
+	trace_armada_ovl_plane_work(&dcrtc->crtc, work->plane);
 
 	armada_drm_crtc_update_regs(dcrtc, dplane->vbl.regs);
 	armada_ovl_retire_fb(dplane, NULL);
@@ -252,8 +253,8 @@ armada_ovl_plane_update(struct drm_plane
 	}
 	if (idx) {
 		armada_reg_queue_end(dplane->vbl.regs, idx);
-		armada_drm_plane_work_queue(dcrtc, &dplane->base,
-					    &dplane->vbl.work);
+		/* Queue it for update on the next interrupt if we are enabled */
+		armada_drm_plane_work_queue(dcrtc, &dplane->vbl.work);
 	}
 	return 0;
 }
@@ -454,6 +455,7 @@ int armada_overlay_plane_create(struct d
 		return ret;
 	}
 
+	dplane->vbl.work.plane = &dplane->base.base;
 	dplane->vbl.work.fn = armada_ovl_plane_work;
 
 	ret = drm_universal_plane_init(dev, &dplane->base.base, crtcs,