[igt-dev] [PATCH i-g-t 5/5] tests/kms_setmode: Validate the vbl sequence numbers
Ville Syrjala
ville.syrjala at linux.intel.com
Thu Mar 7 21:39:26 UTC 2019
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Make sure we haven't already passed the seq numbers we're
requesting when doing the ts calibration.
Suggested-by: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
tests/kms_setmode.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tests/kms_setmode.c b/tests/kms_setmode.c
index acd606cd5b5e..5ce1397f968f 100644
--- a/tests/kms_setmode.c
+++ b/tests/kms_setmode.c
@@ -447,8 +447,17 @@ static void check_timings(int crtc_idx, const drmModeModeInfo *kmode)
wait.request.type |= DRM_VBLANK_ABSOLUTE | DRM_VBLANK_EVENT;
wait.request.sequence = last_seq;
for (n = 0; n < CALIBRATE_TS_STEPS; n++) {
+ drmVBlank check = {};
+
++wait.request.sequence;
do_or_die(drmWaitVBlank(drm_fd, &wait));
+
+ /* Double check that haven't already missed the vblank */
+ check.request.type = kmstest_get_vbl_flag(crtc_idx);
+ check.request.type |= DRM_VBLANK_RELATIVE;
+ do_or_die(drmWaitVBlank(drm_fd, &check));
+
+ igt_assert(!igt_vblank_after(check.reply.sequence, wait.request.sequence));
}
igt_stats_init_with_size(&stats, CALIBRATE_TS_STEPS);
--
2.19.2
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