ipipe: tick: cap timer_set op to device supported max

At this chance, switch the min_delay_tick value to unsigned long to
match the corresponding clockevent definition.

include/linux/ipipe_tickdev.h

@@ -64,7 +64,8 @@ struct ipipe_timer {
 	const char *name;
 	unsigned rating;
 	unsigned long freq;
-	unsigned min_delay_ticks;
+	unsigned long min_delay_ticks;
+	unsigned long max_delay_ticks;
 	const struct cpumask *cpumask;
 
 	/* For internal use */

kernel/ipipe/timer.c

@@ -133,6 +133,10 @@ void ipipe_host_timer_register(struct clock_event_device *evtdev)
 		timer->min_delay_ticks =
 			(evtdev->min_delta_ns * evtdev->mult) >> evtdev->shift;
 
+	if (timer->max_delay_ticks == 0)
+		timer->max_delay_ticks =
+			(evtdev->max_delta_ns * evtdev->mult) >> evtdev->shift;
+
 	if (timer->cpumask == NULL)
 		timer->cpumask = evtdev->cpumask;
 
@@ -499,6 +503,8 @@ void ipipe_timer_set(unsigned long cdelay)
 		tdelay += ((unsigned long long)cdelay * t->c2t_frac) >> 32;
 	if (tdelay < t->min_delay_ticks)
 		tdelay = t->min_delay_ticks;
+	if (tdelay > t->max_delay_ticks)
+		tdelay = t->max_delay_ticks;
 
 	if (t->set(tdelay, t->timer_set) < 0)
 		ipipe_raise_irq(t->irq);