drm/amdgpu:Always save uvd vcpu_bo in VM Mode

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
Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@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>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index 9b340be..17deca0 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -293,12 +293,15 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
        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);