SANTA CLARA, Calif. -- There is a chance Aldon Smith's repetitions will increase Sunday at New Orleans.San Francisco 49ers coach Jim Harbaugh expressed satisfaction with Smith's play in a limited role Sunday in a 10-9 home loss to Carolina. Smith played about a dozen plays, mostly as an inside pass-rusher. It was his first game action since Week 3. He spent five weeks in a treatment center for substance abuse. He returned to practice last week.