drm/exynos: release pending pageflip events when closed

We should release pending pageflip events when closed. If not, they will
be dangling events.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 58820ebd35588f8b1e493234022b0e2132996369..d359cb4b7b88dfa727f295bad4e3bbf0369ee99d 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -147,8 +147,22 @@ static int exynos_drm_unload(struct drm_device *dev)
 static void exynos_drm_preclose(struct drm_device *dev,
                                        struct drm_file *file)
 {
+       struct exynos_drm_private *private = dev->dev_private;
+       struct drm_pending_vblank_event *e, *t;
+       unsigned long flags;
+
        DRM_DEBUG_DRIVER("%s\n", __FILE__);
 
+       /* release events of current file */
+       spin_lock_irqsave(&dev->event_lock, flags);
+       list_for_each_entry_safe(e, t, &private->pageflip_event_list,
+                       base.link) {
+               if (e->base.file_priv == file) {
+                       list_del(&e->base.link);
+                       e->base.destroy(&e->base);
+               }
+       }
+       spin_unlock_irqrestore(&dev->event_lock, flags);
 }
 
 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)