On Wed, 1 Jul 2015, Paul Osmialowski wrote:

Hi Thomas,

On Wed, 1 Jul 2015, Thomas Gleixner wrote:

quoted

quoted

+		clockevents_register_device(
+				&kinetis_clockevent_tmrs[chan].evtdev);
+
+		kinetis_pit_init(&kinetis_clockevent_tmrs[chan],
+						(rate / HZ) - 1);
+		kinetis_pit_enable(&kinetis_clockevent_tmrs[chan], 1);

No point doing this. The core code has invoked the set_periodic call
back via clockevents_register_device() already.

As I removed this kinetis_pit_enable() line, the timer did not start,
therefore the system became unusable. What could be possible reason for that?

Well, you need to move both, the init and the enable into
set_periodic().

Thanks,

	tglx