Trying to set a fence on disabled pipes will be rejected by the kernel:
[ 1275.865029] [drm:drm_atomic_check_only [drm]] [CRTC:39:pipe B] requesting 
event but off

Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99911
---
 tests/kms_atomic_transition.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/kms_atomic_transition.c b/tests/kms_atomic_transition.c
index 2b56eef66b7b..a2470c0c3571 100644
--- a/tests/kms_atomic_transition.c
+++ b/tests/kms_atomic_transition.c
@@ -717,11 +717,11 @@ static void run_modeset_tests(igt_display_t *display, int 
howmany, bool nonblock
                        igt_plane_set_fb(plane, &fbs[1]);
                        igt_fb_set_size(&fbs[1], plane, mode->hdisplay, 
mode->vdisplay);
                        igt_plane_set_size(plane, mode->hdisplay, 
mode->vdisplay);
+
+                       if (fencing)
+                               igt_pipe_request_out_fence(&display->pipes[i]);
                } else
                        igt_plane_set_fb(plane, NULL);
-
-               if(fencing)
-                       igt_pipe_request_out_fence(&display->pipes[i]);
        }
 
        /*
-- 
2.11.0

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