[Intel-gfx] [PATCH i-g-t] tests/kms_mmap_write_crc: Add drmModeDirtyFB after dirtying fb

[Maarten Lankhorst]

The test shows the need for coherency through the dma-buf sync ioctl's,
but forgets to call dirtyfb, without this the FB Is never updated and we
will fail anyway.

Solve this by adding a drmModeDirtyFB, I've confirmed by adding -n
that the test will still faill without prime_sync_end anyway,
so the test is still useful.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Marta Löfstedt <marta.lofstedt at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101109
---
 tests/kms_mmap_write_crc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/kms_mmap_write_crc.c b/tests/kms_mmap_write_crc.c
index e5f089f6b78f..dd44ce97238a 100644
--- a/tests/kms_mmap_write_crc.c
+++ b/tests/kms_mmap_write_crc.c
@@ -156,6 +156,8 @@ static void test(data_t *data)
 	if (ioctl_sync)
 		prime_sync_end(dma_buf_fd, true);
 
+	do_or_die(drmModeDirtyFB(data->drm_fd, fb->fb_id, NULL, 0));
+
 	/* check that the crc is as expected, which requires that caches got flushed */
 	igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
 	igt_assert_crc_equal(&crc, &data->ref_crc);
-- 
2.11.0