Reported-by: NMikko Perttunen <cyndis@kapsi.fi>
Fixes: 6359c982 ("drm/nouveau/mmu/gp10b: fork from gf100")
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
Tested-by: NThierry Reding <treding@nvidia.com>