[PATCH 2/2] drm/sun4i: Send vblank event when the CRTC is disabled

[Maxime Ripard]

So far, we were missing to send the vblank event when disabling the CRTC,
making us never report the last vblank event.

This was causing a time out on the page flip, which should be solved now.

Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
---
 drivers/gpu/drm/sun4i/sun4i_crtc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c 
b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index 4182a21f5923..41cacecbea9a 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -65,6 +65,14 @@ static void sun4i_crtc_disable(struct drm_crtc *crtc)
        DRM_DEBUG_DRIVER("Disabling the CRTC\n");

        sun4i_tcon_disable(drv->tcon);
+
+       if (crtc->state->event && !crtc->state->active) {
+               spin_lock_irq(&crtc->dev->event_lock);
+               drm_crtc_send_vblank_event(crtc, crtc->state->event);
+               spin_unlock_irq(&crtc->dev->event_lock);
+
+               crtc->state->event = NULL;
+       }
 }

 static void sun4i_crtc_enable(struct drm_crtc *crtc)
-- 
2.9.0