drm/armada: move event sending into armada_plane_work

Move the sending of events into the armada_plane_work structure, and
combine the processing in armada_drm_plane_work_call().
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

drivers/gpu/drm/armada/armada_crtc.c

@@ -22,7 +22,6 @@
 
 struct armada_frame_work {
 	struct armada_plane_work work;
-	struct drm_pending_vblank_event *event;
 	struct armada_regs regs[4];
 };
 
@@ -220,15 +219,24 @@ static void armada_drm_plane_work_call(struct armada_crtc *dcrtc,
 	void (*fn)(struct armada_crtc *, struct armada_plane_work *))
 {
 	struct armada_plane *dplane = drm_to_armada_plane(work->plane);
+	struct drm_pending_vblank_event *event = work->event;
 	struct drm_framebuffer *fb = work->old_fb;
 
 	if (fn)
 		fn(dcrtc, work);
 	drm_crtc_vblank_put(&dcrtc->crtc);
 
-	/* Finally, queue the process-half of the cleanup. */
-	if (fb)
-		armada_drm_queue_unref_work(dcrtc->crtc.dev, fb);
+	if (event || fb) {
+		struct drm_device *dev = dcrtc->crtc.dev;
+		unsigned long flags;
+
+		spin_lock_irqsave(&dev->event_lock, flags);
+		if (event)
+			drm_crtc_send_vblank_event(&dcrtc->crtc, event);
+		if (fb)
+			__armada_drm_queue_unref_work(dev, fb);
+		spin_unlock_irqrestore(&dev->event_lock, flags);
+	}
 
 	wake_up(&dplane->frame_wait);
 }
@@ -281,15 +289,6 @@ static void armada_drm_crtc_finish_frame_work(struct armada_crtc *dcrtc,
 	struct armada_plane_work *work)
 {
 	struct armada_frame_work *fwork = container_of(work, struct armada_frame_work, work);
-	unsigned long flags;
-
-	if (fwork->event) {
-		struct drm_device *dev = dcrtc->crtc.dev;
-
-		spin_lock_irqsave(&dev->event_lock, flags);
-		drm_crtc_send_vblank_event(&dcrtc->crtc, fwork->event);
-		spin_unlock_irqrestore(&dev->event_lock, flags);
-	}
 
 	kfree(fwork);
 }
@@ -1032,7 +1031,7 @@ static int armada_drm_crtc_page_flip(struct drm_crtc *crtc,
 	if (!work)
 		return -ENOMEM;
 
-	work->event = event;
+	work->work.event = event;
 	work->work.old_fb = dcrtc->crtc.primary->fb;
 
 	i = armada_drm_crtc_calc_fb(fb, crtc->x, crtc->y, work->regs,

drivers/gpu/drm/armada/armada_crtc.h

@@ -40,6 +40,7 @@ struct armada_plane_work {
 	void (*cancel)(struct armada_crtc *, struct armada_plane_work *);
 	struct drm_plane *plane;
 	struct drm_framebuffer *old_fb;
+	struct drm_pending_vblank_event *event;
 };
 
 struct armada_plane_state {