greybus: interface: move gb_module_interface_init() to interface.c

That's where it belong to. Also rename it in a similar way to:
gb_interface_create() and gb_interface_destroy().
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/staging/greybus/ap.c

@@ -146,7 +146,7 @@ static void svc_management(struct svc_function_unipro_management *management,
 				management->link_up.module_id);
 			return;
 		}
-		ret = gb_module_interface_init(module,
+		ret = gb_interface_init(module,
 				management->link_up.interface_id,
 				management->link_up.device_id);
 		if (ret)

drivers/staging/greybus/interface.c

@@ -111,6 +111,36 @@ void gb_interface_destroy(struct gb_module *gmod)
 	spin_unlock_irq(&gb_interfaces_lock);
 }
 
+int gb_interface_init(struct gb_module *gmod, u8 interface_id, u8 device_id)
+{
+	struct gb_interface *interface;
+	int ret;
+
+	interface = gb_interface_find(gmod, interface_id);
+	if (!interface) {
+		dev_err(gmod->hd->parent, "module %hhu not found\n",
+			interface_id);
+		return -ENOENT;
+	}
+	interface->device_id = device_id;
+
+	ret = svc_set_route_send(interface, gmod->hd);
+	if (ret) {
+		dev_err(gmod->hd->parent, "failed to set route (%d)\n", ret);
+		return ret;
+	}
+
+	ret = gb_interface_connections_init(interface);
+	if (ret) {
+		dev_err(gmod->hd->parent, "module interface init error %d\n",
+			ret);
+		/* XXX clear route */
+		return ret;
+	}
+
+	return 0;
+}
+
 struct gb_interface *gb_interface_find(struct gb_module *module,
 				      u8 interface_id)
 {

drivers/staging/greybus/interface.h

@@ -24,6 +24,7 @@ struct gb_interface {
 
 struct gb_interface *gb_interface_create(struct gb_module *gmod, u8 module_id);
 void gb_interface_destroy(struct gb_module *gmod);
+int gb_interface_init(struct gb_module *gmod, u8 module_id, u8 device_id);
 
 struct gb_interface *gb_interface_find(struct gb_module *gmod, u8 interface_id);
 

drivers/staging/greybus/module.c

@@ -201,34 +201,3 @@ void gb_remove_modules(struct greybus_host_device *hd)
 	list_for_each_entry_safe(gmod, temp, &hd->modules, links)
 		gb_module_destroy(gmod);
 }
-
-int
-gb_module_interface_init(struct gb_module *gmod, u8 interface_id, u8 device_id)
-{
-	struct gb_interface *interface;
-	int ret;
-
-	interface = gb_interface_find(gmod, interface_id);
-	if (!interface) {
-		dev_err(gmod->hd->parent, "module %hhu not found\n",
-			interface_id);
-		return -ENOENT;
-	}
-	interface->device_id = device_id;
-
-	ret = svc_set_route_send(interface, gmod->hd);
-	if (ret) {
-		dev_err(gmod->hd->parent, "failed to set route (%d)\n", ret);
-		return ret;
-	}
-
-	ret = gb_interface_connections_init(interface);
-	if (ret) {
-		dev_err(gmod->hd->parent, "module interface init error %d\n",
-			ret);
-		/* XXX clear route */
-		return ret;
-	}
-
-	return 0;
-}

drivers/staging/greybus/module.h

@@ -55,7 +55,4 @@ void gb_module_destroy(struct gb_module *module);
 struct gb_module *gb_module_find(struct greybus_host_device *hd,
 				u8 module_id);
 
-int gb_module_interface_init(struct gb_module *gmod, u8 module_id,
-				u8 device_id);
-
 #endif /* __MODULE_H */