drm/nouveau: Call drm_vblank_pre/post_modeset() around mode setting.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nv04_crtc.c b/drivers/gpu/drm/nouveau/nv04_crtc.c
index e4aea721971..297505eb98d 100644
--- a/drivers/gpu/drm/nouveau/nv04_crtc.c
+++ b/drivers/gpu/drm/nouveau/nv04_crtc.c
@@ -672,6 +672,7 @@ static void nv_crtc_prepare(struct drm_crtc *crtc)
         if (nv_two_heads(dev))
                 NVSetOwner(dev, nv_crtc->index);
 
+        drm_vblank_pre_modeset(dev, nv_crtc->index);
         funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
 
         NVBlankScreen(dev, nv_crtc->index, true);
@@ -704,6 +705,7 @@ static void nv_crtc_commit(struct drm_crtc *crtc)
 #endif
 
         funcs->dpms(crtc, DRM_MODE_DPMS_ON);
+        drm_vblank_post_modeset(dev, nv_crtc->index);
 }
 
 static void nv_crtc_destroy(struct drm_crtc *crtc)