drm/imx: only send event on crtc disable if kept disabled

commit 5aeab2b upstream.

The event will be sent as part of the vblank enable during the modeset
if the crtc is not being kept disabled.

Fixes: 5f2f911 ("drm/imx: atomic phase 3 step 1: Use atomic configuration")

Signed-off-by: Robert Beckett <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Signed-off-by: Philipp Zabel <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: BobBeckett

drivers/gpu/drm/imx/ipuv3-crtc.c

@@ -79,7 +79,7 @@ static void ipu_crtc_atomic_disable(struct drm_crtc *crtc,
 	drm_crtc_vblank_off(crtc);
 
 	spin_lock_irq(&crtc->dev->event_lock);
-	if (crtc->state->event) {
+	if (crtc->state->event && !crtc->state->active) {
 		drm_crtc_send_vblank_event(crtc, crtc->state->event);
 		crtc->state->event = NULL;
 	}