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drm/amd/display: verify stream link before link test

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[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 <Jing.Zhou@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jing Zhou 2019-08-22 14:26:33 +08:00 committed by Alex Deucher
parent d6bbece2c4
commit b131932215
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
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@ -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(