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

drm/amdgpu: Notify sbios device ready before send request

to the 4.4-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-notify-sbios-device-ready-before-send-request.patch and it can be found in the queue-4.4 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 1bced75f4ab04bec55aecb57d99435dc6d0ae5a0 Mon Sep 17 00:00:00 2001

From: Rex Zhu Rex.Zhu@amd.com Date: Tue, 27 Feb 2018 18:20:53 +0800 Subject: drm/amdgpu: Notify sbios device ready before send request

From: Rex Zhu Rex.Zhu@amd.com

commit 1bced75f4ab04bec55aecb57d99435dc6d0ae5a0 upstream.

it is required if a platform supports PCIe root complex core voltage reduction. After receiving this notification, SBIOS can apply default PCIe root complex power policy.

Reviewed-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Rex Zhu Rex.Zhu@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/amdgpu_acpi.c | 3 +++ 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -585,6 +585,9 @@ int amdgpu_acpi_pcie_performance_request size_t size; u32 retry = 3;

+ if (amdgpu_acpi_pcie_notify_device_ready(adev)) + return -EINVAL; + /* Get the device handle */ handle = ACPI_HANDLE(&adev->pdev->dev); if (!handle)

Patches currently in stable-queue which might be from Rex.Zhu@amd.com are

queue-4.4/drm-amdgpu-notify-sbios-device-ready-before-send-request.patch