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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: Guan Xuetao <gxt@mprc.pku.edu.cn>
This commit is contained in:
GuanXuetao 2011-02-17 17:50:43 +08:00
parent b31d82737d
commit a913a8234b
1 changed files with 2 additions and 7 deletions
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9
arch/unicore32/kernel/time.c
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@ -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 =