drm/atmel: Nuke preclose

The only thing this did was cancle pending flip events, and the core
takes care of that now.

Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453756616-28942-5-git-send-email-daniel.vetter@ffwll.ch

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c

@@ -280,24 +280,6 @@ static void atmel_hlcdc_crtc_destroy(struct drm_crtc *c)
 	kfree(crtc);
 }
 
-void atmel_hlcdc_crtc_cancel_page_flip(struct drm_crtc *c,
-				       struct drm_file *file)
-{
-	struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
-	struct drm_pending_vblank_event *event;
-	struct drm_device *dev = c->dev;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev->event_lock, flags);
-	event = crtc->event;
-	if (event && event->base.file_priv == file) {
-		event->base.destroy(&event->base);
-		drm_vblank_put(dev, crtc->id);
-		crtc->event = NULL;
-	}
-	spin_unlock_irqrestore(&dev->event_lock, flags);
-}
-
 static void atmel_hlcdc_crtc_finish_page_flip(struct atmel_hlcdc_crtc *crtc)
 {
 	struct drm_device *dev = crtc->base.dev;

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c

@@ -619,15 +619,6 @@ static void atmel_hlcdc_dc_connector_unplug_all(struct drm_device *dev)
 	mutex_unlock(&dev->mode_config.mutex);
 }
 
-static void atmel_hlcdc_dc_preclose(struct drm_device *dev,
-				    struct drm_file *file)
-{
-	struct drm_crtc *crtc;
-
-	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
-		atmel_hlcdc_crtc_cancel_page_flip(crtc, file);
-}
-
 static void atmel_hlcdc_dc_lastclose(struct drm_device *dev)
 {
 	struct atmel_hlcdc_dc *dc = dev->dev_private;
@@ -698,7 +689,6 @@ static struct drm_driver atmel_hlcdc_dc_driver = {
 	.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
 			   DRIVER_MODESET | DRIVER_PRIME |
 			   DRIVER_ATOMIC,
-	.preclose = atmel_hlcdc_dc_preclose,
 	.lastclose = atmel_hlcdc_dc_lastclose,
 	.irq_handler = atmel_hlcdc_dc_irq_handler,
 	.irq_preinstall = atmel_hlcdc_dc_irq_uninstall,

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h

@@ -152,9 +152,6 @@ int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state);
 
 void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
 
-void atmel_hlcdc_crtc_cancel_page_flip(struct drm_crtc *crtc,
-				       struct drm_file *file);
-
 void atmel_hlcdc_crtc_suspend(struct drm_crtc *crtc);
 void atmel_hlcdc_crtc_resume(struct drm_crtc *crtc);