Patch "drm/amdgpu: Notify sbios device ready before send request" has been added to the 4.9-stable tree

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 4.9-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-notify-sbios-device-ready-before-send-request.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Rex Zhu <[email protected]>
Date: Tue, 27 Feb 2018 18:20:53 +0800
Subject: drm/amdgpu: Notify sbios device ready before send request

From: Rex Zhu <[email protected]>

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.

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -540,6 +540,9 @@ 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 [email protected] are

queue-4.9/drm-amdgpu-notify-sbios-device-ready-before-send-request.patch