[Intel-gfx] [PATCH i-g-t 1/2] lib/igt_debugfs: Throw away the two first CRCs

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

On CHV we sometimes see not just one but two bad CRCs. No real idea
what would cause that, but let's just throw away the second CRC as
well to gain some stability for the tests.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 lib/igt_debugfs.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c
index 0b098ee..b44333e 100644
--- a/lib/igt_debugfs.c
+++ b/lib/igt_debugfs.c
@@ -425,8 +425,11 @@ void igt_pipe_crc_start(igt_pipe_crc_t *pipe_crc)
 	/*
 	 * For some no yet identified reason, the first CRC is bonkers. So
 	 * let's just wait for the next vblank and read out the buggy result.
+	 *
+	 * On CHV sometimes the second CRC is bonkers as well, so don't trust
+	 * that one either.
 	 */
-	igt_pipe_crc_get_crcs(pipe_crc, 1, &crcs);
+	igt_pipe_crc_get_crcs(pipe_crc, 2, &crcs);
 	free(crcs);
 }
 
-- 
2.0.4