kms_flip: Set everything to zero to disable a CRTC

Just setting fb=0 is not enough as the kernel thinks userspace is
insane.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/tests/kms_flip.c b/tests/kms_flip.c
index 0b8a0a8..9f02442 100644 (file)
--- a/tests/kms_flip.c
+++ b/tests/kms_flip.c
@@ -718,9 +718,17 @@ static int set_mode(struct test_output *o, int fb, int x, int y)
        int n;
 
        for (n = 0; n < o->count; n++) {
-               if (drmModeSetCrtc(drm_fd, o->_crtc[n], fb,
-                                  x, y, &o->_connector[n], 1, &o->kmode[n]))
-                       return -1;
+               if (fb == 0) {
+                       if (drmModeSetCrtc(drm_fd, o->_crtc[n],
+                                          0, 0, 0,
+                                          0, 0, 0))
+                               return -1;
+               } else {
+                       if (drmModeSetCrtc(drm_fd, o->_crtc[n],
+                                          fb, x, y,
+                                          &o->_connector[n], 1, &o->kmode[n]))
+                               return -1;
+               }
        }
 
        return 0;