static void gb_svc_process_module_inserted()

in svc.c [943:989]

• 39 lines of code
• 5 McCabe index (conditional complexity)

static void gb_svc_process_module_inserted(struct gb_operation *operation)
{
	struct gb_svc_module_inserted_request *request;
	struct gb_connection *connection = operation->connection;
	struct gb_svc *svc = gb_connection_get_data(connection);
	struct gb_host_device *hd = svc->hd;
	struct gb_module *module;
	size_t num_interfaces;
	u8 module_id;
	u16 flags;
	int ret;

	/* The request message size has already been verified. */
	request = operation->request->payload;
	module_id = request->primary_intf_id;
	num_interfaces = request->intf_count;
	flags = le16_to_cpu(request->flags);

	dev_dbg(&svc->dev, "%s - id = %u, num_interfaces = %zu, flags = 0x%04x\n",
		__func__, module_id, num_interfaces, flags);

	if (flags & GB_SVC_MODULE_INSERTED_FLAG_NO_PRIMARY) {
		dev_warn(&svc->dev, "no primary interface detected on module %u\n",
			 module_id);
	}

	module = gb_svc_module_lookup(svc, module_id);
	if (module) {
		dev_warn(&svc->dev, "unexpected module-inserted event %u\n",
			 module_id);
		return;
	}

	module = gb_module_create(hd, module_id, num_interfaces);
	if (!module) {
		dev_err(&svc->dev, "failed to create module\n");
		return;
	}

	ret = gb_module_add(module);
	if (ret) {
		gb_module_put(module);
		return;
	}

	list_add(&module->hd_node, &hd->modules);
}