drm/exynos: fixed page flip bug.

in case of using two drivers such as fimd and hdmi controller that
they have their own hardware interrupt, drm framework doesn't provide
pipe number corresponding to it. so the pipe should be set to event's
from specific crtc.

Signed-off-by: Seung-Woo Kim <sw0312.kim@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>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index a190348ed9b..83810cbe3c1 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -124,6 +124,19 @@ static int exynos_drm_unload(struct drm_device *dev)
         return 0;
 }
 
+static void exynos_drm_preclose(struct drm_device *dev,
+                                        struct drm_file *file_priv)
+{
+        struct exynos_drm_private *dev_priv = dev->dev_private;
+
+        /*
+         * drm framework frees all events at release time,
+         * so private event list should be cleared.
+         */
+        if (!list_empty(&dev_priv->pageflip_event_list))
+                INIT_LIST_HEAD(&dev_priv->pageflip_event_list);
+}
+
 static void exynos_drm_lastclose(struct drm_device *dev)
 {
         DRM_DEBUG_DRIVER("%s\n", __FILE__);
@@ -152,6 +165,7 @@ static struct drm_driver exynos_drm_driver = {
                                   DRIVER_MODESET | DRIVER_GEM,
         .load                   = exynos_drm_load,
         .unload                 = exynos_drm_unload,
+        .preclose               = exynos_drm_preclose,
         .lastclose              = exynos_drm_lastclose,
         .get_vblank_counter     = drm_vblank_count,
         .enable_vblank          = exynos_drm_crtc_enable_vblank,