Shanwan Ps3 Controller Clone under linux

Please no one can help me? It's lot of time that i need to solve this issue for my children...
Thanks
Dario

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evdev: Evdev button (NULLSTR) (302) is unknown. Please add it to the button list.

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Where is button_list ?

case EV_KEY:
{
m_is_button_or_trigger = true;

// get the button value and return its code
if (button_list.find(code) == button_list.end())
{
evdev_log.error("Evdev button %s (%d) is unknown. Please add it to the button list.", libevdev_event_code_get_name(EV_KEY, code), code);
return -1;
}

value = val > 0 ? 255 : 0;
return code;
}