tic void amdgpu_ttm_mmio_remap_bo_fini(struct amdgpu_device *adev)
 {
+	struct amdgpu_bo *bo = adev->rmmio_remap.bo;
+
+	if (!bo)
+		return;   /* <-- safest early exit */
+
+	if (!amdgpu_bo_reserve(adev->rmmio_remap.bo, true)) {
+		ttm_bo_unpin(&adev->rmmio_remap.bo->tbo);
+		amdgpu_bo_unreserve(adev->rmmio_remap.bo);
+	}
 	amdgpu_bo_unref(&adev->rmmio_remap.bo);
 	adev->rmmio_remap.bo = NULL;
 }
-- 
2.51.0[PATCH 6.19 258/781] drm/amdgpu/ttm: Pin 4K MMIO_REMAP Singleton BO at Init v2Greg Kroah-Hartman <gregkh@linuxfoundation.org> undefinedstable@vger.kernel.org undefined undefined undefined undefined undefined undefinedÛ†™m