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Commit a913a823 authored by GuanXuetao's avatar GuanXuetao
Browse files

unicore32 time.c: change calculate method for clock_event_device 



apply clockevents_calc_mult_shift() to get rid of
shift assignment and mult calculation for osmr0
  -- by advice with Thomas Gleixner

Signed-off-by: default avatarGuan Xuetao <gxt@mprc.pku.edu.cn>
parent b31d8273

arch/unicore32/kernel/time.c

+2 −7
Original line number Diff line number Diff line
@@ -66,11 +66,6 @@ puv3_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *c) 
static struct clock_event_device ckevt_puv3_osmr0 = {

	.name		= "osmr0",

	.features	= CLOCK_EVT_FEAT_ONESHOT,

#ifdef CONFIG_ARCH_FPGA

	.shift		= 18, /* correct shift val: 16, but warn_on_slowpath */

#else

	.shift          = 30,

#endif

	.rating		= 200,

	.set_next_event	= puv3_osmr0_set_next_event,

	.set_mode	= puv3_osmr0_set_mode,
@@ -101,8 +96,8 @@ void __init time_init(void) 
	OST_OIER = 0;		/* disable any timer interrupts */

	OST_OSSR = 0;		/* clear status on all timers */



	ckevt_puv3_osmr0.mult =

		div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, ckevt_puv3_osmr0.shift);

	clockevents_calc_mult_shift(&ckevt_puv3_osmr0, CLOCK_TICK_RATE, 5);



	ckevt_puv3_osmr0.max_delta_ns =

		clockevent_delta2ns(0x7fffffff, &ckevt_puv3_osmr0);

	ckevt_puv3_osmr0.min_delta_ns =