drm/amdgpu: fix s4 resume

No need to re-init asic if it's already been initialized.
Skip IB tests since kernel processes are frozen in thaw.

Signed-off-by: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 85991cee62e6..51bfc114584e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1795,15 +1795,20 @@ int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
         }
 
         /* post card */
-        amdgpu_atom_asic_init(adev->mode_info.atom_context);
+        if (!amdgpu_card_posted(adev))
+                amdgpu_atom_asic_init(adev->mode_info.atom_context);
 
         r = amdgpu_resume(adev);
+        if (r)
+                DRM_ERROR("amdgpu_resume failed (%d).\n", r);
 
         amdgpu_fence_driver_resume(adev);
 
-        r = amdgpu_ib_ring_tests(adev);
-        if (r)
-                DRM_ERROR("ib ring test failed (%d).\n", r);
+        if (resume) {
+                r = amdgpu_ib_ring_tests(adev);
+                if (r)
+                        DRM_ERROR("ib ring test failed (%d).\n", r);
+        }
 
         r = amdgpu_late_init(adev);
         if (r)