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, 7 deletions

diff --git a/arch/arm/plat-spear/time.c b/arch/arm/plat-spear/time.c
index 03321af5de9f..bd5c53cd6962 100644
--- a/arch/arm/plat-spear/time.c
+++ b/arch/arm/plat-spear/time.c
@@ -186,15 +186,9 @@ static void __init spear_clockevent_init(int irq)
         tick_rate = clk_get_rate(gpt_clk);
         tick_rate >>= CTRL_PRESCALER16;
 
-        clockevents_calc_mult_shift(&clkevt, tick_rate, SPEAR_MIN_RANGE);
-
-        clkevt.max_delta_ns = clockevent_delta2ns(0xfff0,
-                        &clkevt);
-        clkevt.min_delta_ns = clockevent_delta2ns(3, &clkevt);
-
         clkevt.cpumask = cpumask_of(0);
 
-        clockevents_register_device(&clkevt);
+        clockevents_config_and_register(&clkevt, tick_rate, 3, 0xfff0);
 
         setup_irq(irq, &spear_timer_irq);
 }