diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/kms_setmode.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/tests/kms_setmode.c b/tests/kms_setmode.c index a01010a1..878e149a 100644 --- a/tests/kms_setmode.c +++ b/tests/kms_setmode.c @@ -525,10 +525,12 @@ static void check_timings(int crtc_idx, const drmModeModeInfo *kmode) * See: * https://en.wikipedia.org/wiki/Standard_deviation#Rules_for_normally_distributed_data */ - igt_assert_f(fabs(mean - expected) < 1.718 * stddev, - "vblank interval differs from modeline! expected %.1fus, measured %1.fus +- %.3fus, difference %.1fus (%.1f sigma)\n", + igt_assert_f(fabs(mean - expected) < max(line_time(kmode), 1.718 * stddev), + "vblank interval differs from modeline! expected %.1fus, measured %1.fus +- %.3fus, difference %.1fus (%.1f sigma, %.1f scanlines)\n", expected, mean, stddev, - fabs(mean - expected), fabs(mean - expected) / stddev); + fabs(mean - expected), + fabs(mean - expected) / stddev, + fabs(mean - expected) / line_time(kmode)); } static void test_crtc_config(const struct test_config *tconf, |