r = disable_event(han, sched_switch.name, channel.name)
self.assertGreaterEqual(r, 0, strerror(r))
r = disable_event(han, sched_process_free.name, channel.name)
self.assertGreaterEqual(r, 0, strerror(r))
r = disable_event(han, sched_switch.name, channel.name)
self.assertGreaterEqual(r, 0, strerror(r))
r = disable_event(han, sched_process_free.name, channel.name)
self.assertGreaterEqual(r, 0, strerror(r))