drm/nouveau/nvif: give every disp object a human-readable identifier

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drivers/gpu/drm/nouveau/include/nvif/disp.h

@@ -7,6 +7,7 @@ struct nvif_disp {
 	struct nvif_object object;
 };
 
-int nvif_disp_ctor(struct nvif_device *, s32 oclass, struct nvif_disp *);
+int nvif_disp_ctor(struct nvif_device *, const char *name, s32 oclass,
+		   struct nvif_disp *);
 void nvif_disp_dtor(struct nvif_disp *);
 #endif

drivers/gpu/drm/nouveau/nouveau_display.c

@@ -635,7 +635,8 @@ nouveau_display_create(struct drm_device *dev)
 	drm_kms_helper_poll_disable(dev);
 
 	if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
-		ret = nvif_disp_ctor(&drm->client.device, 0, &disp->disp);
+		ret = nvif_disp_ctor(&drm->client.device, "kmsDisp", 0,
+				     &disp->disp);
 		if (ret == 0) {
 			nouveau_display_create_properties(dev);
 			if (disp->disp.object.oclass < NV50_DISP)

drivers/gpu/drm/nouveau/nvif/disp.c

@@ -31,7 +31,8 @@ nvif_disp_dtor(struct nvif_disp *disp)
 }
 
 int
-nvif_disp_ctor(struct nvif_device *device, s32 oclass, struct nvif_disp *disp)
+nvif_disp_ctor(struct nvif_device *device, const char *name, s32 oclass,
+	       struct nvif_disp *disp)
 {
 	static const struct nvif_mclass disps[] = {
 		{ TU102_DISP, -1 },
@@ -56,6 +57,6 @@ nvif_disp_ctor(struct nvif_device *device, s32 oclass, struct nvif_disp *disp)
 	if (cid < 0)
 		return cid;
 
-	return nvif_object_ctor(&device->object, "nvifDisp", 0,
+	return nvif_object_ctor(&device->object, name ? name : "nvifDisp", 0,
 				disps[cid].oclass, NULL, 0, &disp->object);
 }