1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index cf2e8c4e9b8b..d2d0f60ff36d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -83,6 +83,13 @@ int amdgpu_cs_get_ring(struct amdgpu_device *adev, u32 ip_type,
                 }
                 break;
         }
+
+        if (!(*out_ring && (*out_ring)->adev)) {
+                DRM_ERROR("Ring %d is not initialized on IP %d\n",
+                          ring, ip_type);
+                return -EINVAL;
+        }
+
         return 0;
 }
 
@@ -344,8 +351,7 @@ static u64 amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev)
  * submission. This can result in a debt that can stop buffer migrations
  * temporarily.
  */
-static void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev,
-                                         u64 num_bytes)
+void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes)
 {
         spin_lock(&adev->mm_stats.lock);
         adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes);