From 73cc90798ff765341a1d9c2cfe18153ab231c9bb Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 30 Jun 2017 09:58:34 -0400
Subject: drm/amdgpu/cgs: always set reference clock in mode_info
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It's relevent regardless of whether there are displays
enabled. Fixes garbage values for ref clock in powerplay
leading to incorrect fan speed reporting when displays
are disabled.
bug: https://bugs.freedesktop.org/show_bug.cgi?id=101653
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
(limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c')
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
index 8b8eda7d1703..c0a806280257 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c
@@ -838,9 +838,12 @@ static int amdgpu_cgs_get_active_displays_info(struct cgs_device *cgs_device,
return -EINVAL;
mode_info = info->mode_info;
- if (mode_info)
+ if (mode_info) {
/* if the displays are off, vblank time is max */
mode_info->vblank_time_us = 0xffffffff;
+ /* always set the reference clock */
+ mode_info->ref_clock = adev->clock.spll.reference_freq;
+ }
if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) {
list_for_each_entry(crtc,
--
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