igt/kms_pipe_crc_basic: Skip test before hang injection

If the pipe doesn't exist, don't bother submitting a hanging batch. Do a
basic check first before doing a crc read against a hanging batch.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 6 insertions, 2 deletions

diff --git a/tests/kms_pipe_crc_basic.c b/tests/kms_pipe_crc_basic.c
index dd2ad3c3..b0622cfb 100644
--- a/tests/kms_pipe_crc_basic.c
+++ b/tests/kms_pipe_crc_basic.c
@@ -249,10 +249,14 @@ igt_main
 		}
 
 		igt_subtest_f("hang-read-crc-pipe-%c", 'A'+i) {
-			igt_hang_t hang =
-				igt_hang_ring(data.drm_fd, I915_EXEC_RENDER);
+			igt_hang_t hang;
+
+			test_read_crc(&data, i, 0);
+
+			hang = igt_hang_ring(data.drm_fd, I915_EXEC_RENDER);
 			test_read_crc(&data, i, 0);
 			igt_post_hang_ring(data.drm_fd, hang);
+
 			test_read_crc(&data, i, 0);
 		}
 	}