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authorNicolas Pitre <nico@cam.org>2006-11-20 22:19:29 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-11-30 12:52:45 +0000
commit46ec0ce8ce7eab6242188ea8a596538753c53b22 (patch)
tree03a50ddfe2dafbdbf2ecf6297a1c4e45a7d58c75
parentbf46878c4ef4cf04a3564f0ff2e7daae353ee2e2 (diff)
[ARM] 3940/1: don't reset PXA2xx clock counter
Don't reset OSCR to zero as this prevents us from having a contiguous time source. The value returned by sched_clock() is reset to zero in the middle of the boot process otherwise, making CONFIG_PRINTK_TIME rather messed up. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--arch/arm/mach-pxa/time.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
index 3ac268fa419..b9146686102 100644
--- a/arch/arm/mach-pxa/time.c
+++ b/arch/arm/mach-pxa/time.c
@@ -124,6 +124,7 @@ static struct irqaction pxa_timer_irq = {
static void __init pxa_timer_init(void)
{
struct timespec tv;
+ unsigned long flags;
set_rtc = pxa_set_rtc;
@@ -132,12 +133,12 @@ static void __init pxa_timer_init(void)
do_settimeofday(&tv);
OIER = 0; /* disable any timer interrupts */
- OSCR = LATCH*2; /* push OSCR out of the way */
- OSMR0 = LATCH; /* set initial match */
OSSR = 0xf; /* clear status on all timers */
setup_irq(IRQ_OST0, &pxa_timer_irq);
+ local_irq_save(flags);
OIER = OIER_E0; /* enable match on timer 0 to cause interrupts */
- OSCR = 0; /* initialize free-running timer */
+ OSMR0 = OSCR + LATCH; /* set initial match */
+ local_irq_restore(flags);
}
#ifdef CONFIG_NO_IDLE_HZ