Hi Pekka,

>  int ofono_modem_set_boolean(struct ofono_modem *modem,
> -				const char *key, bool value);
> -bool ofono_modem_get_boolean(struct ofono_modem *modem, const char *key);
> +				const char *key, gboolean value);
> +gboolean ofono_modem_get_boolean(struct ofono_modem *modem, const char
>  *key);

Err, please pay attention.  This should be ofono_bool_t.  I fixed it for you 
(again).

Regards,
-Denis