This is a note to let you know that I've just added the patch titled drm/amdgpu/cgs: always set reference clock in mode_info to the 4.12-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-amdgpu-cgs-always-set-reference-clock-in-mode_info.patch and it can be found in the queue-4.12 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 73cc90798ff765341a1d9c2cfe18153ab231c9bb Mon Sep 17 00:00:00 2001 From: Alex Deucher <alexander.deucher@xxxxxxx> Date: Fri, 30 Jun 2017 09:58:34 -0400 Subject: drm/amdgpu/cgs: always set reference clock in mode_info MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Alex Deucher <alexander.deucher@xxxxxxx> commit 73cc90798ff765341a1d9c2cfe18153ab231c9bb upstream. 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@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- 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_display 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, Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are queue-4.12/drm-amd-amdgpu-return-error-if-initiating-read-out-of-range-on-vram.patch queue-4.12/drm-radeon-fix-edp-for-single-display-imac10-1-v2.patch queue-4.12/drm-amdgpu-gfx8-drop-per-apu-cu-limits.patch queue-4.12/drm-amdgpu-cgs-always-set-reference-clock-in-mode_info.patch queue-4.12/drm-amdgpu-don-t-call-amd_powerplay_destroy-if-we-don-t-have-powerplay.patch queue-4.12/drm-radeon-ci-disable-mclk-switching-for-high-refresh-rates-v2.patch queue-4.12/drm-amdgpu-fix-the-memory-corruption-on-s3.patch queue-4.12/drm-amdgpu-fix-vblank_time-when-displays-are-off.patch queue-4.12/drm-ttm-fix-use-after-free-in-ttm_bo_clean_mm.patch