amdgpu_ring_alloc(ring, 32);
amdgpu_ring_emit_wreg(ring, reg, v);
amdgpu_fence_emit_polling(ring, &seq);
amdgpu_ring_commit(ring);
amdgpu_ring_alloc(ring, 32);
amdgpu_ring_emit_wreg(ring, reg, v);
amdgpu_fence_emit_polling(ring, &seq);
amdgpu_ring_commit(ring);