This is a note to let you know that I've just added the patch titled

drm/amdgpu: disable MMHUB power gating on raven

to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: drm-amdgpu-disable-mmhub-power-gating-on-raven.patch and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 400b6afbaa949914460e5fd1d769c5e26ef1f6b8 Mon Sep 17 00:00:00 2001

From: Huang Rui ray.huang@amd.com Date: Thu, 14 Dec 2017 13:47:16 +0800 Subject: drm/amdgpu: disable MMHUB power gating on raven

From: Huang Rui ray.huang@amd.com

commit 400b6afbaa949914460e5fd1d769c5e26ef1f6b8 upstream.

MMHUB power gating still has issue, and doesn't work on raven at current. So disable it for the moment.

Signed-off-by: Huang Rui ray.huang@amd.com Acked-by: Hawking Zhang Hawking.Zhang@amd.com Acked-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/gpu/drm/amd/amdgpu/soc15.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -659,8 +659,8 @@ static int soc15_common_early_init(void AMD_CG_SUPPORT_MC_LS | AMD_CG_SUPPORT_SDMA_MGCG | AMD_CG_SUPPORT_SDMA_LS; - adev->pg_flags = AMD_PG_SUPPORT_SDMA | - AMD_PG_SUPPORT_MMHUB; + adev->pg_flags = AMD_PG_SUPPORT_SDMA; + adev->external_rev_id = 0x1; break; default:

Patches currently in stable-queue which might be from ray.huang@amd.com are

queue-4.15/drm-amdgpu-disable-mmhub-power-gating-on-raven.patch