ARM: use clockevents_config_and_register() where possible

The clockevent core is able to figure out the best mult and shift,
calculate min_delta_ns and max_delta_ns, with the necessary info passed
into clockevents_config_and_register().  Use this combined configure
and register function where possible to make the codes less error prone
and gain some positive diff stat.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Tested-by: Roland Stigge <stigge@antcom.de>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: David Brown <davidb@codeaurora.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Barry Song <baohua.song@csr.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 1 insertions, 8 deletions

diff --git a/arch/arm/mach-lpc32xx/timer.c b/arch/arm/mach-lpc32xx/timer.c
index c40667c33161..502b3c6ee295 100644
--- a/arch/arm/mach-lpc32xx/timer.c
+++ b/arch/arm/mach-lpc32xx/timer.c
@@ -70,7 +70,6 @@ static void lpc32xx_clkevt_mode(enum clock_event_mode mode,
 static struct clock_event_device lpc32xx_clkevt = {
         .name           = "lpc32xx_clkevt",
         .features       = CLOCK_EVT_FEAT_ONESHOT,
-        .shift          = 32,
         .rating         = 300,
         .set_next_event = lpc32xx_clkevt_next_event,
         .set_mode       = lpc32xx_clkevt_mode,
@@ -141,14 +140,8 @@ static void __init lpc32xx_timer_init(void)
         setup_irq(IRQ_LPC32XX_TIMER0, &lpc32xx_timer_irq);
 
         /* Setup the clockevent structure. */
-        lpc32xx_clkevt.mult = div_sc(clkrate, NSEC_PER_SEC,
-                lpc32xx_clkevt.shift);
-        lpc32xx_clkevt.max_delta_ns = clockevent_delta2ns(-1,
-                &lpc32xx_clkevt);
-        lpc32xx_clkevt.min_delta_ns = clockevent_delta2ns(1,
-                &lpc32xx_clkevt) + 1;
         lpc32xx_clkevt.cpumask = cpumask_of(0);
-        clockevents_register_device(&lpc32xx_clkevt);
+        clockevents_config_and_register(&lpc32xx_clkevt, clkrate, 1, -1);
 
         /* Use timer1 as clock source. */
         __raw_writel(LPC32XX_TIMER_CNTR_TCR_RESET,