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authorMikael Pettersson <mikpe@it.uu.se>2009-09-11 00:59:07 +0200
committerKrzysztof Hałasa <khc@pm.waw.pl>2009-09-21 19:20:03 +0200
commitceb69a899f0819bce825083bd487c6afacc0d1b4 (patch)
treef0578705aa05260585bb083a9f536af70177a91d /arch/arm
parent43c1266ce4dc06bfd236cec31e11e9ecd69c0bef (diff)
downloadop-kernel-dev-ceb69a899f0819bce825083bd487c6afacc0d1b4.zip
op-kernel-dev-ceb69a899f0819bce825083bd487c6afacc0d1b4.tar.gz
ixp4xx: timer and clocks cleanups
This patch does a few simple cleanups of the ixp4xx timer and clocksource/clockevent code in mach-ixp4xx/common.c: - ixp4xx_clocksource_init() is static and always returns 0, which is ignored by its only caller: make it return void - ixp4xx_clockevent_init(): ditto - ixp4xx_get_cycles() is only referenced locally: make it static - use the ixp4xx_timer_irq.dev_id field to pass &clockevent_ixp4xx to ixp4xx_timer_interrupt() via its dev_id parameter, allowing the code in ixp4xx_timer_interrupt() to be smaller and faster Tested on an ixp420 machine (ds101). Signed-off-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-ixp4xx/common.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index 5083f03..cfd52fb 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -41,8 +41,8 @@
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
-static int __init ixp4xx_clocksource_init(void);
-static int __init ixp4xx_clockevent_init(void);
+static void __init ixp4xx_clocksource_init(void);
+static void __init ixp4xx_clockevent_init(void);
static struct clock_event_device clockevent_ixp4xx;
/*************************************************************************
@@ -267,7 +267,7 @@ void __init ixp4xx_init_irq(void)
static irqreturn_t ixp4xx_timer_interrupt(int irq, void *dev_id)
{
- struct clock_event_device *evt = &clockevent_ixp4xx;
+ struct clock_event_device *evt = dev_id;
/* Clear Pending Interrupt by writing '1' to it */
*IXP4XX_OSST = IXP4XX_OSST_TIMER_1_PEND;
@@ -281,6 +281,7 @@ static struct irqaction ixp4xx_timer_irq = {
.name = "timer1",
.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
.handler = ixp4xx_timer_interrupt,
+ .dev_id = &clockevent_ixp4xx,
};
void __init ixp4xx_timer_init(void)
@@ -401,7 +402,7 @@ void __init ixp4xx_sys_init(void)
/*
* clocksource
*/
-cycle_t ixp4xx_get_cycles(struct clocksource *cs)
+static cycle_t ixp4xx_get_cycles(struct clocksource *cs)
{
return *IXP4XX_OSTS;
}
@@ -417,14 +418,12 @@ static struct clocksource clocksource_ixp4xx = {
unsigned long ixp4xx_timer_freq = FREQ;
EXPORT_SYMBOL(ixp4xx_timer_freq);
-static int __init ixp4xx_clocksource_init(void)
+static void __init ixp4xx_clocksource_init(void)
{
clocksource_ixp4xx.mult =
clocksource_hz2mult(ixp4xx_timer_freq,
clocksource_ixp4xx.shift);
clocksource_register(&clocksource_ixp4xx);
-
- return 0;
}
/*
@@ -480,7 +479,7 @@ static struct clock_event_device clockevent_ixp4xx = {
.set_next_event = ixp4xx_set_next_event,
};
-static int __init ixp4xx_clockevent_init(void)
+static void __init ixp4xx_clockevent_init(void)
{
clockevent_ixp4xx.mult = div_sc(FREQ, NSEC_PER_SEC,
clockevent_ixp4xx.shift);
@@ -491,5 +490,4 @@ static int __init ixp4xx_clockevent_init(void)
clockevent_ixp4xx.cpumask = cpumask_of(0);
clockevents_register_device(&clockevent_ixp4xx);
- return 0;
}
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