The passive is rare, and may be lexical: occurring with a small set of verbs with resulting adjectival meaning: 'cooked', 'ripe', 'closed', 'open', and seldom occurring with an overt, passivized by-agent phrase. However more proficient speakers do produce forms like 'was born' and also have two passive suffixes: -wa for present 'is closed' and -iwe for past 'was closed'). So though restricted, I think the pidgin just about has a passive that uses a suffix (or two for some speakers).