drm/amdgpu: skip kfd suspend/resume for S0ix

GFX is in gfxoff mode during s0ix so we shouldn't need to
actually tear anything down and restore it.

Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 5705bde..7ae5e1d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3734,7 +3734,8 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)
 
        r = amdgpu_device_ip_suspend_phase1(adev);
 
-       amdgpu_amdkfd_suspend(adev, adev->in_runpm);
+       if (!adev->in_s0ix)
+               amdgpu_amdkfd_suspend(adev, adev->in_runpm);
 
        /* evict vram memory */
        amdgpu_bo_evict_vram(adev);
@@ -3794,9 +3795,11 @@ int amdgpu_device_resume(struct drm_device *dev, bool fbcon)
        queue_delayed_work(system_wq, &adev->delayed_init_work,
                           msecs_to_jiffies(AMDGPU_RESUME_MS));
 
-       r = amdgpu_amdkfd_resume(adev, adev->in_runpm);
-       if (r)
-               return r;
+       if (!adev->in_s0ix) {
+               r = amdgpu_amdkfd_resume(adev, adev->in_runpm);
+               if (r)
+                       return r;
+       }
 
        /* Make sure IB tests flushed */
        flush_delayed_work(&adev->delayed_init_work);