clocksource/drivers/orion: Read clock rate once

Rather than reading the clock rate three times, read it once - we are
about to add a fourth usage.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/clocksource/time-orion.c b/drivers/clocksource/time-orion.c
index a28f496e97cf..c4818a5dc8e5 100644
--- a/drivers/clocksource/time-orion.c
+++ b/drivers/clocksource/time-orion.c
@@ -106,6 +106,7 @@ static struct irqaction orion_clkevt_irq = {
 
 static int __init orion_timer_init(struct device_node *np)
 {
+        unsigned long rate;
         struct clk *clk;
         int irq, ret;
 
@@ -135,6 +136,8 @@ static int __init orion_timer_init(struct device_node *np)
                 return -EINVAL;
         }
 
+        rate = clk_get_rate(clk);
+
         /* setup timer0 as free-running clocksource */
         writel(~0, timer_base + TIMER0_VAL);
         writel(~0, timer_base + TIMER0_RELOAD);
@@ -142,15 +145,15 @@ static int __init orion_timer_init(struct device_node *np)
                 TIMER0_RELOAD_EN | TIMER0_EN,
                 TIMER0_RELOAD_EN | TIMER0_EN);
 
-        ret = clocksource_mmio_init(timer_base + TIMER0_VAL, "orion_clocksource",
-                                    clk_get_rate(clk), 300, 32,
+        ret = clocksource_mmio_init(timer_base + TIMER0_VAL,
+                                    "orion_clocksource", rate, 300, 32,
                                     clocksource_mmio_readl_down);
         if (ret) {
                 pr_err("Failed to initialize mmio timer");
                 return ret;
         }
 
-        sched_clock_register(orion_read_sched_clock, 32, clk_get_rate(clk));
+        sched_clock_register(orion_read_sched_clock, 32, rate);
 
         /* setup timer1 as clockevent timer */
         ret = setup_irq(irq, &orion_clkevt_irq);
@@ -162,7 +165,7 @@ static int __init orion_timer_init(struct device_node *np)
         ticks_per_jiffy = (clk_get_rate(clk) + HZ/2) / HZ;
         orion_clkevt.cpumask = cpumask_of(0);
         orion_clkevt.irq = irq;
-        clockevents_config_and_register(&orion_clkevt, clk_get_rate(clk),
+        clockevents_config_and_register(&orion_clkevt, rate,
                                         ORION_ONESHOT_MIN, ORION_ONESHOT_MAX);
 
         return 0;