[Intel-gfx] [PATCH i-g-t] tests: kms_pipe_color: fix ctm tests

[Lionel Landwerlin]

Some of the Intel platforms have odd numbers of LUT entries and we
need to tests a couple of values around the expected result. Bring
back the CRC equal function we need that doesn't trigger an assert
right away, while we still assert if we can't find a correct result in
the outter loop.

bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97691
Fixes: 582ce4cd19c627606047b1a8fdd987c4dc07353c
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Christophe Prigent <christophe.prigent at intel.com>
---
 tests/kms_pipe_color.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tests/kms_pipe_color.c b/tests/kms_pipe_color.c
index b0a2f07..ebfceab 100644
--- a/tests/kms_pipe_color.c
+++ b/tests/kms_pipe_color.c
@@ -652,6 +652,16 @@ static void test_pipe_legacy_gamma_reset(data_t *data,
 	free(gamma_zero);
 }
 
+static bool crc_equal(igt_crc_t *a, igt_crc_t *b)
+{
+  int i;
+
+  for (i = 0; i < a->n_words; i++)
+    if (a->crc[i] != b->crc[i])
+      return false;
+  return true;
+}
+
 /*
  * Draw 3 rectangles using before colors with the ctm matrix apply and verify
  * the CRC is equal to using after colors with an identify ctm matrix.
@@ -724,7 +734,7 @@ static bool test_pipe_ctm(data_t *data,
 		/* Verify that the CRC of the software computed output is
 		 * equal to the CRC of the CTM matrix transformation output.
 		 */
-		igt_assert_crc_equal(&crc_software, &crc_hardware);
+		ret &= crc_equal(&crc_software, &crc_hardware);
 
 		igt_output_set_pipe(output, PIPE_ANY);
 	}
-- 
2.8.1