Patch "drm/amdgpu:Always save uvd vcpu_bo in VM Mode" 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:Always save uvd vcpu_bo in VM Mode

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-always-save-uvd-vcpu_bo-in-vm-mode.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: James Zhu <[email protected]>
Date: Tue, 6 Mar 2018 14:52:35 -0500
Subject: drm/amdgpu:Always save uvd vcpu_bo in VM Mode
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From: James Zhu <[email protected]>

commit f8bee6135e167f5b35b7789c74c2956dad14d0d5 upstream.

When UVD is in VM mode, there is not uvd handle exchanged, uvd.handles are always 0. So vcpu_bo always need save, Otherwise amdgpu driver will fail during suspend/resume.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105021

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c |   13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

@@ -273,12 +273,15 @@ int amdgpu_uvd_suspend(struct amdgpu_dev
 	if (adev->uvd.vcpu_bo == NULL)
 		return 0;
 
-	for (i = 0; i < adev->uvd.max_handles; ++i)
-		if (atomic_read(&adev->uvd.handles[i]))
-			break;
+	/* only valid for physical mode */
+	if (adev->asic_type < CHIP_POLARIS10) {
+		for (i = 0; i < adev->uvd.max_handles; ++i)
+			if (atomic_read(&adev->uvd.handles[i]))
+				break;
 
-	if (i == adev->uvd.max_handles)
-		return 0;
+		if (i == adev->uvd.max_handles)
+			return 0;
+	}
 
 	cancel_delayed_work_sync(&adev->uvd.idle_work);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/drm-amdgpu-correct-max-uvd-handles.patch queue-4.9/drm-amdgpu-always-save-uvd-vcpu_bo-in-vm-mode.patch