drm/amd/display: fix CTS 4.2.2.8

[Why]
1-Test equipment does not reset test automation flag after completing
current test causing the next test to fail.
2.When test request is empty, we shouldn't ack the test.

[How]
1-Driver should always clear test equipment automation test request
when request is completed.
2-Driver should clear test equipement test automation if driver does
not complete the request.

Signed-off-by: abdoulaye berthe <abdoulaye.berthe@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 568fdc9..cf93627 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -2002,11 +2002,7 @@ static void handle_automated_test(struct dc_link *link)
                dp_test_send_phy_test_pattern(link);
                test_response.bits.ACK = 1;
        }
-       if (!test_request.raw)
-               /* no requests, revert all test signals
-                * TODO: revert all test signals
-                */
-               test_response.bits.ACK = 1;
+
        /* send request acknowledgment */
        if (test_response.bits.ACK)
                core_link_write_dpcd(