If the HR person at work revealed my salary to someone I supervise, do I have recourse?

The company where I work took an across the board pay cut of 5% in January of 2009. In January of 2010 I was reinstated to my old salary, but no one else at the site was. The human resources person (business manager) was gossiping and told 2 employees that I had been reinstated to my former salary. This has brought resentment into the supervisor/employee relationship. I wrote a letter formally complaining, but my supervisor refuses to take any action against the HR mgr. Do I have any other recourse? Is this something I should take further up the line?