Now the  writing operation return the count of writes whether events are
enabled or disabled. Fix this by just return -EFAULT when events are disabled.

sunliming (3):
  tracing/user_events: Fix incorrect return value for writing operation
    when events are disabled
  selftests/user_events: Enable the event before write_fault test in
    ftrace self-test
  selftests/user_events: Add test cases when event is disabled

 kernel/trace/trace_events_user.c                  | 3 ++-
 tools/testing/selftests/user_events/ftrace_test.c | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

-- 
2.25.1