This is a note to let you know that I've just added the patch titled drm/amd/display: setup system context for APUs to the 5.14-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-amd-display-setup-system-context-for-apus.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 3ca001aff0878546494d7f403334c8d987924977 Mon Sep 17 00:00:00 2001 From: Aaron Liu <aaron.liu@xxxxxxx> Date: Mon, 23 Aug 2021 12:26:50 +0800 Subject: drm/amd/display: setup system context for APUs From: Aaron Liu <aaron.liu@xxxxxxx> commit 3ca001aff0878546494d7f403334c8d987924977 upstream. Scatter/gather is APU feature starting from carrizo. adev->apu_flags is not used for all APUs. adev->flags & AMD_IS_APU can be used for all APUs. Signed-off-by: Aaron Liu <aaron.liu@xxxxxxx> Reviewed-by: Huang Rui <ray.huang@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1202,7 +1202,7 @@ static int amdgpu_dm_init(struct amdgpu_ dc_hardware_init(adev->dm.dc); #if defined(CONFIG_DRM_AMD_DC_DCN) - if (adev->apu_flags) { + if ((adev->flags & AMD_IS_APU) && (adev->asic_type >= CHIP_CARRIZO)) { struct dc_phy_addr_space_config pa_config; mmhub_read_system_context(adev, &pa_config); Patches currently in stable-queue which might be from aaron.liu@xxxxxxx are queue-5.14/drm-amd-display-setup-system-context-for-apus.patch queue-5.14/drm-amdgpu-enable-s-g-for-yellow-carp.patch