From d99c3871148cb643cffe138e9427b7a743aca367 Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Thu, 11 Mar 2010 14:57:35 -0800 Subject: [PATCH] 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 --- arch/arm/mach-davinci/time.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-davinci/time.c b/arch/arm/mach-davinci/time.c index 42d985beece5..9e0b106b4f5f 100644 --- a/arch/arm/mach-davinci/time.c +++ b/arch/arm/mach-davinci/time.c @@ -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 = { -- 2.20.1