LinuxPPS: SysFS entries have no write methods, so files permission should be read only (0444). Signed-off-by: Rodolfo Giometti drivers/pps/sysfs.c URL: http://gitweb.enneenne.com/?p=linuxpps;a=commit;h=f61fcb74e0f03fdc0d789444260050c3e81c5c7c