drm/nouveau/mmu: index engref by subdev type

None of the chipsets we use this on have instanced engines, so this is fine.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drivers/gpu/drm/nouveau/nvkm/engine/fifo/chan.c

@@ -118,7 +118,7 @@ nvkm_fifo_chan_child_del(struct nvkm_oproxy *base)
 			chan->func->engine_dtor(chan, engine);
 		nvkm_object_del(&engn->object);
 		if (chan->vmm)
-			atomic_dec(&chan->vmm->engref[engine->subdev.index]);
+			atomic_dec(&chan->vmm->engref[engine->subdev.type]);
 	}
 }
 
@@ -152,7 +152,7 @@ nvkm_fifo_chan_child_new(const struct nvkm_oclass *oclass, void *data, u32 size,
 		};
 
 		if (chan->vmm)
-			atomic_inc(&chan->vmm->engref[engine->subdev.index]);
+			atomic_inc(&chan->vmm->engref[engine->subdev.type]);
 
 		if (engine->func->fifo.cclass) {
 			ret = engine->func->fifo.cclass(chan, &cclass,

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c

@@ -207,7 +207,7 @@ nv50_vmm_flush(struct nvkm_vmm *vmm, int level)
 		case NVKM_ENGINE_MSVLD : id = 0x09; break;
 		case NVKM_ENGINE_CIPHER:
 		case NVKM_ENGINE_SEC   : id = 0x0a; break;
-		case NVKM_ENGINE_CE0   : id = 0x0d; break;
+		case NVKM_ENGINE_CE    : id = 0x0d; break;
 		default:
 			continue;
 		}