[ARM] 3939/1: don't reset SA11x0 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>
diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
index 4284bd6..29c89f9 100644
--- a/arch/arm/mach-sa1100/time.c
+++ b/arch/arm/mach-sa1100/time.c
@@ -118,6 +118,7 @@
static void __init sa1100_timer_init(void)
{
struct timespec tv;
+ unsigned long flags;
set_rtc = sa1100_set_rtc;
@@ -126,12 +127,12 @@
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, &sa1100_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