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platform_kernel-5.15
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davinci: timers: don't enable timer until clocksource is initialized 

On da830, when the same timer is used for clocksource and clockevent,
the timer can be started before the clockevent is
registered/initialzed.  This creates a window where a timer
interrupt might fire before the clockevent handler has been
setup and causes a crash.

This patch moves the actual enable/start of the timer after
the clockevent has ben registered.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman 2010-03-11 14:57:35 -08:00
parent 2eaa9cfdf3
commit d99c387114
1 changed files with 4 additions and 2 deletions
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6
arch/arm/mach-davinci/time.c
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@ -253,8 +253,6 @@ static void __init timer_init(void)
irq = USING_COMPARE(t) ? dtip[i].cmp_irq : irq;
setup_irq(irq, &t->irqaction);
}
timer32_config(&timers[i]);
}
}
@ -331,6 +329,7 @@ static void __init davinci_timer_init(void)
unsigned int clocksource_id;
static char err[] __initdata = KERN_ERR
"%s: can't register clocksource!\n";
int i;
clockevent_id = soc_info->timer_info->clockevent_id;
clocksource_id = soc_info->timer_info->clocksource_id;
@ -389,6 +388,9 @@ static void __init davinci_timer_init(void)
clockevent_davinci.cpumask = cpumask_of(0);
clockevents_register_device(&clockevent_davinci);
for (i=0; i< ARRAY_SIZE(timers); i++)
timer32_config(&timers[i]);
}
struct sys_timer davinci_timer = {