drm/nouveau/fifo: tidy up channel creation event code

Signed-off-by: Ben Skeggs <[e-mail]>

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

···
 }
 
 static int
-nvkm_fifo_event_ctor(struct nvkm_object *object, void *data, u32 size,
-		     struct nvkm_notify *notify)
+nvkm_fifo_cevent_ctor(struct nvkm_object *object, void *data, u32 size,
+		      struct nvkm_notify *notify)
 {
 	if (size == 0) {
 		notify->size  = 0;
···
 }
 
 static const struct nvkm_event_func
-nvkm_fifo_event_func = {
-	.ctor = nvkm_fifo_event_ctor,
+nvkm_fifo_cevent_func = {
+	.ctor = nvkm_fifo_cevent_ctor,
 };
+
+void
+nvkm_fifo_cevent(struct nvkm_fifo *fifo)
+{
+	nvkm_event_send(&fifo->cevent, 1, 0, NULL, 0);
+}
 
 static void
 nvkm_fifo_uevent_fini(struct nvkm_event *event, int type, int index)
···
 			return ret;
 	}
 
-	return nvkm_event_init(&nvkm_fifo_event_func, 1, 1, &fifo->cevent);
+	return nvkm_event_init(&nvkm_fifo_cevent_func, 1, 1, &fifo->cevent);
 }

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

···
 		     base + user * chan->chid;
 	chan->size = user;
 
-	nvkm_event_send(&fifo->cevent, 1, 0, NULL, 0);
+	nvkm_fifo_cevent(fifo);
 	return 0;
 }

drivers/gpu/drm/nouveau/nvkm/engine/fifo/priv.h

···
 int nvkm_fifo_ctor(const struct nvkm_fifo_func *, struct nvkm_device *,
 		   int index, int nr, struct nvkm_fifo *);
 void nvkm_fifo_uevent(struct nvkm_fifo *);
+void nvkm_fifo_cevent(struct nvkm_fifo *);
 
 struct nvkm_fifo_chan_oclass;
 struct nvkm_fifo_func {