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From 60577e58760c282196b3803b7cd11016234e867e Mon Sep 17 00:00:00 2001
From: Hersen Wu <hersenxs.wu@amd.com>
Date: Wed, 27 Jun 2018 13:03:04 -0400
Subject: [PATCH 4937/5725] drm/amd/display: dp debugfs allow link rate lane
count greater than dp rx reported caps
[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>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index 0276e09..0d9e410 100644
--- 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(struct file *f, const char __user *buf,
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;
--
2.7.4
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