El DeBarge -- El Busted Again

El Debarge'80's pop star El DeBarge was popped again -- this time allegedly for possession of a controlled substance.

TMZ has learned the singer was arrested in L.A. earlier this month, and locked up after cops discovered two warrants for his arrest.

El DeBarge -- real name Patrick Eldra DeBarge -- was nailed on several charges last year, ranging from vandalism to drugs and domestic violence.

Patrick is being held without bail and is due back in court tomorrow.