[PATCH 4.9 094/102] drm/imx: only send event on crtc disable if kept disabled

From: Greg Kroah-Hartman
Date: Mon Jul 08 2019 - 11:23:37 EST


From: Robert Beckett <bob.beckett@xxxxxxxxxxxxx>

commit 5aeab2bfc9ffa72d3ca73416635cb3785dfc076f upstream.

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

Fixes: 5f2f911578fb ("drm/imx: atomic phase 3 step 1: Use atomic configuration")

Signed-off-by: Robert Beckett <bob.beckett@xxxxxxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/gpu/drm/imx/ipuv3-crtc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -79,7 +79,7 @@ static void ipu_crtc_atomic_disable(stru
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;
}