[Intel-gfx] [PATCH igt] igt/kms_setmode: Clear all connectors before starting the test

[Chris Wilson]

Before we start trying random combinations of connectors and CRTCs, we
should first ensure we have a blank slate so that if we only change a
subset of the CRTC we do not conflict with a residual setup on the other
CRTC.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 tests/kms_setmode.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/kms_setmode.c b/tests/kms_setmode.c
index 24fb34c..df958f0 100644
--- a/tests/kms_setmode.c
+++ b/tests/kms_setmode.c
@@ -268,6 +268,10 @@ static void setup_crtcs(drmModeRes *resources, struct connector_config *cconf,
 	int i;
 	int encoder_usage_count[resources->count_encoders];
 
+	for (i = 0; i < resources->count_crtcs; i++)
+		drmModeSetCrtc(drm_fd, resources->crtcs[i],
+			       0, 0, 0, 0, 0, NULL);
+
 	i = 0;
 	crtc_count = 0;
 	crtc = crtcs;
-- 
2.9.3