[PATCH 08/22] drm/amd/display: not abort link train when bw is low

[Tom Chung]

From: Peichen Huang <peichen.hu...@amd.com>

[WHY]
DP tunneling should not abort link train even bandwidth become
too low after downgrade. Otherwise, it would fail compliance test.

[HOW}
Do link train with downgrade settings even bandwidth is not enough

Reviewed-by: Cruise Hung <cruise.h...@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasunda...@amd.com>
Signed-off-by: Peichen Huang <peichen.hu...@amd.com>
Signed-off-by: Tom Chung <chiahsuan.ch...@amd.com>
---
 .../gpu/drm/amd/display/dc/link/protocols/link_dp_training.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c 
b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c
index 613298d21d03..ef358afdfb65 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c
@@ -1789,13 +1789,10 @@ bool perform_link_training_with_retries(
                        is_link_bw_min = ((cur_link_settings.link_rate <= 
LINK_RATE_LOW) &&
                                (cur_link_settings.lane_count <= 
LANE_COUNT_ONE));
 
-                       if (is_link_bw_low) {
+                       if (is_link_bw_low)
                                DC_LOG_WARNING(
                                        "%s: Link(%d) bandwidth too low after 
fallback req_bw(%d) > link_bw(%d)\n",
                                        __func__, link->link_index, req_bw, 
link_bw);
-
-                               return false;
-                       }
                }
 
                msleep(delay_between_attempts);
-- 
2.34.1