From: Hersen Wu <hersenxs.wu@amd.com>
Date: Wed, 27 Jun 2018 13:03:04 -0400
Subject: drm/amd/display: dp debugfs allow link rate lane count greater than
 dp rx reported caps
Git-commit: 245524d9b827e184de1a23aff24c7872fed04cdb
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

[Why]
when hw team does phy parameters tuning, there is need to force dp
link rate or lane count grater than the values from dp receiver to
check dp tx. current debufs limit link rate, lane count no more
than rx caps.

[How] remove force settings less than rx caps check

v2: Fix typo in title

Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -214,8 +214,7 @@ static ssize_t dp_link_settings_write(st
 		break;
 	}
 
-	if (!valid_input || (param[0] > link->reported_link_cap.lane_count) ||
-			(param[1] > link->reported_link_cap.link_rate)) {
+	if (!valid_input) {
 		kfree(wr_buf);
 		DRM_DEBUG_DRIVER("Invalid Input value No HW will be programmed\n");
 		return bytes_from_user;