static int gb_operation_response_send()

in operation.c [33:76]

• 30 lines of code
• 7 McCabe index (conditional complexity)

static int gb_operation_response_send(struct gb_operation *operation,
				      int errno);

/*
 * Increment operation active count and add to connection list unless the
 * connection is going away.
 *
 * Caller holds operation reference.
 */
static int gb_operation_get_active(struct gb_operation *operation)
{
	struct gb_connection *connection = operation->connection;
	unsigned long flags;

	spin_lock_irqsave(&connection->lock, flags);
	switch (connection->state) {
	case GB_CONNECTION_STATE_ENABLED:
		break;
	case GB_CONNECTION_STATE_ENABLED_TX:
		if (gb_operation_is_incoming(operation))
			goto err_unlock;
		break;
	case GB_CONNECTION_STATE_DISCONNECTING:
		if (!gb_operation_is_core(operation))
			goto err_unlock;
		break;
	default:
		goto err_unlock;
	}

	if (operation->active++ == 0)
		list_add_tail(&operation->links, &connection->operations);

	trace_gb_operation_get_active(operation);

	spin_unlock_irqrestore(&connection->lock, flags);

	return 0;

err_unlock:
	spin_unlock_irqrestore(&connection->lock, flags);

	return -ENOTCONN;
}