drm: Add a debug node for vblank state.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 7802c80f2b23..afb7858c068d 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -911,6 +911,7 @@ struct drm_device {
         int *vblank_enabled;            /* so we don't call enable more than
                                            once per disable */
         int *vblank_inmodeset;          /* Display driver is setting mode */
+        u32 *last_vblank_wait;          /* Last vblank seqno waited per CRTC */
         struct timer_list vblank_disable_timer;
 
         u32 max_vblank_count;           /**< size of vblank counter register */