Commits
Ksenija Stanojevic committed 1e5cae2f0b3
Staging: comedi: Use mutex instead of semaphore in usbdux.c Replace binary semaphore with mutex because mutex gives better performance. This change is safe because the thread that decrements the value of semaphore is also the one that increments it, and acts like a mutex where owner of the lock is the only one that can release the lock. Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>