The Raiders elevated Johnson to the active roster Sunday.
Johnson was elevated from the practice squad Saturday by the Raiders.
The Raiders waived Johnson (concussion) on Friday, Adam Schefter of ESPN reports.
Johnson (concussion) was a full participant at practice Wednesday.
Johnson (concussion) is inactive for Sunday's game against the Jets.
Johnson (concussion) is listed as questionable ahead of Sunday's game against the Jets, Vincent Bonsignore of the Las Vegas Review-Journal reports.
Johnson (concussion) has been ruled out ahead of Sunday's game against Giants, Rachel Gossen of the Raiders' official site reports.
Johnson caught his only target for no gain in Sunday's 22-16 overtime win over the Broncos.
Johnson played 20 of the Raiders' 70 snaps on offense (29 percent) but didn't log a target or carry in Sunday's 25-20 loss to the Colts.
Johnson caught his only target for one yard in Sunday's 24-19 loss to the Chargers.