diff --git a/drivers/gpu/drm/nouveau/include/nvif/class.h b/drivers/gpu/drm/nouveau/include/nvif/class.h
index 9e4df725f29b291f15199930fe7391057126fdcd..3a2c0137d4b42d477f281063a2df44d1868ad33b 100644
--- a/drivers/gpu/drm/nouveau/include/nvif/class.h
+++ b/drivers/gpu/drm/nouveau/include/nvif/class.h
@@ -2,13 +2,17 @@
 #define __NVIF_CLASS_H__
 
 /* these class numbers are made up by us, and not nvidia-assigned */
-#define NVIF_CLASS_CONTROL                                    /* if0001.h */ -1
-#define NVIF_CLASS_PERFMON                                    /* if0002.h */ -2
-#define NVIF_CLASS_PERFDOM                                    /* if0003.h */ -3
-#define NVIF_CLASS_SW_NV04                                    /* if0004.h */ -4
-#define NVIF_CLASS_SW_NV10                                    /* if0005.h */ -5
-#define NVIF_CLASS_SW_NV50                                    /* if0005.h */ -6
-#define NVIF_CLASS_SW_GF100                                   /* if0005.h */ -7
+#define NVIF_CLASS_CLIENT                            /* if0000.h */ -0x00000000
+
+#define NVIF_CLASS_CONTROL                           /* if0001.h */ -0x00000001
+
+#define NVIF_CLASS_PERFMON                           /* if0002.h */ -0x00000002
+#define NVIF_CLASS_PERFDOM                           /* if0003.h */ -0x00000003
+
+#define NVIF_CLASS_SW_NV04                           /* if0004.h */ -0x00000004
+#define NVIF_CLASS_SW_NV10                           /* if0005.h */ -0x00000005
+#define NVIF_CLASS_SW_NV50                           /* if0005.h */ -0x00000006
+#define NVIF_CLASS_SW_GF100                          /* if0005.h */ -0x00000007
 
 /* the below match nvidia-assigned (either in hw, or sw) class numbers */
 #define NV_NULL_CLASS                                                0x00000030
diff --git a/drivers/gpu/drm/nouveau/include/nvif/if0000.h b/drivers/gpu/drm/nouveau/include/nvif/if0000.h
index 85c44e8a12012dad19ee06c93c8422dcbfd28584..18bbd823677d7cfcd83b21d7fa52fb99883c3042 100644
--- a/drivers/gpu/drm/nouveau/include/nvif/if0000.h
+++ b/drivers/gpu/drm/nouveau/include/nvif/if0000.h
@@ -1,9 +1,9 @@
 #ifndef __NVIF_IF0000_H__
 #define __NVIF_IF0000_H__
 
-#define NV_CLIENT_DEVLIST                                                  0x00
+#define NVIF_CLIENT_V0_DEVLIST                                             0x00
 
-struct nv_client_devlist_v0 {
+struct nvif_client_devlist_v0 {
 	__u8  version;
 	__u8  count;
 	__u8  pad02[6];
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/core/client.h b/drivers/gpu/drm/nouveau/include/nvkm/core/client.h
index f5861ab4ecff44919df26da47fe1e0692f77e957..a87d458246b6ac9eb7c52e2aff462960b10cfb12 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/core/client.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/core/client.h
@@ -1,5 +1,6 @@
 #ifndef __NVKM_CLIENT_H__
 #define __NVKM_CLIENT_H__
+#define nvkm_client(p) container_of((p), struct nvkm_client, object)
 #include <core/object.h>
 
 struct nvkm_client {
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/client.c b/drivers/gpu/drm/nouveau/nvkm/core/client.c
index 8087b253845c105ee77a8a3f62c470c61437c24f..aab4a8897cfb662e53864ca7a58d57f246f432ba 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/client.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/client.c
@@ -31,6 +31,11 @@
 #include <nvif/if0000.h>
 #include <nvif/unpack.h>
 
+static const struct nvkm_sclass
+nvkm_uclient_sclass = {
+	.oclass = NVIF_CLASS_CLIENT,
+};
+
 struct nvkm_client_notify {
 	struct nvkm_client *client;
 	struct nvkm_notify n;
@@ -139,16 +144,16 @@ nvkm_client_notify_new(struct nvkm_object *object,
 }
 
 static int
-nvkm_client_mthd_devlist(struct nvkm_object *object, void *data, u32 size)
+nvkm_client_mthd_devlist(struct nvkm_client *client, void *data, u32 size)
 {
 	union {
-		struct nv_client_devlist_v0 v0;
+		struct nvif_client_devlist_v0 v0;
 	} *args = data;
 	int ret = -ENOSYS;
 
-	nvif_ioctl(object, "client devlist size %d\n", size);
+	nvif_ioctl(&client->object, "client devlist size %d\n", size);
 	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
-		nvif_ioctl(object, "client devlist vers %d count %d\n",
+		nvif_ioctl(&client->object, "client devlist vers %d count %d\n",
 			   args->v0.version, args->v0.count);
 		if (size == sizeof(args->v0.device[0]) * args->v0.count) {
 			ret = nvkm_device_list(args->v0.device, args->v0.count);
@@ -167,9 +172,10 @@ nvkm_client_mthd_devlist(struct nvkm_object *object, void *data, u32 size)
 static int
 nvkm_client_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
 {
+	struct nvkm_client *client = nvkm_client(object);
 	switch (mthd) {
-	case NV_CLIENT_DEVLIST:
-		return nvkm_client_mthd_devlist(object, data, size);
+	case NVIF_CLIENT_V0_DEVLIST:
+		return nvkm_client_mthd_devlist(client, data, size);
 	default:
 		break;
 	}
@@ -243,7 +249,7 @@ int
 nvkm_client_new(const char *name, u64 device, const char *cfg,
 		const char *dbg, struct nvkm_client **pclient)
 {
-	struct nvkm_oclass oclass = {};
+	struct nvkm_oclass oclass = { .base = nvkm_uclient_sclass };
 	struct nvkm_client *client;
 
 	if (!(client = *pclient = kzalloc(sizeof(*client), GFP_KERNEL)))