[PATCH] drm/virtio: fix vblank handling

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virtio has its own commit fail function.  Add the
drm_atomic_helper_fake_vblank() call there.

Fixes: 2a735ad3d211 ("drm/virtio: Remove sending of vblank event")
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
 drivers/gpu/drm/virtio/virtgpu_display.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index ecf4ba7cc32b..7b0f0643bb2d 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -324,6 +324,7 @@ static void vgdev_atomic_commit_tail(struct drm_atomic_state *state)
 	drm_atomic_helper_commit_modeset_enables(dev, state);
 	drm_atomic_helper_commit_planes(dev, state, 0);
 
+	drm_atomic_helper_fake_vblank(state);
 	drm_atomic_helper_commit_hw_done(state);
 
 	drm_atomic_helper_wait_for_vblanks(dev, state);
-- 
2.18.1

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