[igt-dev] [PATCH] tests/kms_bw: remove fb in the reverse order

[Alex Hung]

Some systems observe instability if fb is not removed in the
reverse order.

Signed-off-by: Alex Hung <alex.hung at amd.com>
---
 tests/kms_bw.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tests/kms_bw.c b/tests/kms_bw.c
index 2a8df5b3..9ecd58af 100644
--- a/tests/kms_bw.c
+++ b/tests/kms_bw.c
@@ -194,6 +194,13 @@ static void run_test_linear_tiling(data_t *data, int pipe, const drmModeModeInfo
 		igt_pipe_crc_collect_crc(data->pipe_crc[i], &captured[i]);
 		igt_assert_f(!igt_check_crc_equal(&zero, &captured[i]),
 			     "CRC is zero\n");
+	}
+
+	for (i = pipe; i >= 0; i--) {
+		output = data->output[i];
+		if (!output)
+			continue;
+
 		igt_remove_fb(display->drm_fd, &buffer[i]);
 	}
 
-- 
2.39.0