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

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

[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>

authored by

Jing Zhou and committed by

Alex Deucher 6 years ago b1319322 d6bbece2

+2 -1

1 changed file

expand all

drivers

gpu

drm

amd

display

core

dc_link_hwss.c

+2 -1

drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c

··· 277 277 if (pipes[i].stream != NULL && 278 278 !pipes[i].top_pipe && !pipes[i].prev_odm_pipe && 279 279 pipes[i].stream->link != NULL && 280 - pipes[i].stream_res.stream_enc != NULL) { 280 + pipes[i].stream_res.stream_enc != NULL && 281 + pipes[i].stream->link == link) { 281 282 udelay(100); 282 283 283 284 pipes[i].stream_res.stream_enc->funcs->dp_blank(