From: Jing Zhou <[email protected]>

[Why]
DP1.2 LL CTS test failure.

[How]
The failure is caused by not verify stream link is equal
to link, only check stream and link is not null.

Signed-off-by: Jing Zhou <[email protected]>
Reviewed-by: Wenjing Liu <[email protected]>
Acked-by: Bhawanpreet Lakha <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c 
b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
index 79438c4f1e20..a519dbc5ecb6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
@@ -277,7 +277,8 @@ void dp_retrain_link_dp_test(struct dc_link *link,
                if (pipes[i].stream != NULL &&
                        !pipes[i].top_pipe && !pipes[i].prev_odm_pipe &&
                        pipes[i].stream->link != NULL &&
-                       pipes[i].stream_res.stream_enc != NULL) {
+                       pipes[i].stream_res.stream_enc != NULL &&
+                       pipes[i].stream->link == link) {
                        udelay(100);
 
                        pipes[i].stream_res.stream_enc->funcs->dp_blank(
-- 
2.17.1

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