The enable field needs to be kept in sync with the mode_blob field. Call
drm_atomic_set_mode_prop_for_crtc() instead of setting enable to false
in order to dereference the mode blob correctly.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
---
 drivers/gpu/drm/drm_atomic_helper.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

Changes since v1:

- Check the return value of drm_atomic_set_mode_prop_for_crtc()
- Drop the num_connectors local variable

diff --git a/drivers/gpu/drm/drm_atomic_helper.c 
b/drivers/gpu/drm/drm_atomic_helper.c
index 536ae4da4665..ec3d65a497ac 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1561,10 +1561,14 @@ static int update_output_state(struct drm_atomic_state 
*state,
                if (crtc == set->crtc)
                        continue;

-               crtc_state->enable =
-                       drm_atomic_connectors_for_crtc(state, crtc);
-               if (!crtc_state->enable)
+               if (!drm_atomic_connectors_for_crtc(state, crtc)) {
+                       ret = drm_atomic_set_mode_prop_for_crtc(crtc_state,
+                                                               NULL);
+                       if (ret < 0)
+                               return ret;
+
                        crtc_state->active = false;
+               }
        }

        return 0;
-- 
Regards,

Laurent Pinchart

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