pciehp_card_present_or_link_active
int pciehp_card_present_or_link_active(struct controller *ctrl);
ret = pciehp_card_present_or_link_active(ctrl);
occupied = pciehp_card_present_or_link_active(ctrl);
if (!pciehp_card_present_or_link_active(ctrl) && poweron) {