diff options
Diffstat (limited to 'arch/i386/kernel/i8253.c')
| -rw-r--r-- | arch/i386/kernel/i8253.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/i386/kernel/i8253.c b/arch/i386/kernel/i8253.c index 5cbb776b308..f8a3c4054c7 100644 --- a/arch/i386/kernel/i8253.c +++ b/arch/i386/kernel/i8253.c @@ -47,9 +47,17 @@ static void init_pit_timer(enum clock_event_mode mode, outb(LATCH >> 8 , PIT_CH0); /* MSB */ break; - case CLOCK_EVT_MODE_ONESHOT: + /* + * Avoid unnecessary state transitions, as it confuses + * Geode / Cyrix based boxen. + */ case CLOCK_EVT_MODE_SHUTDOWN: + if (evt->mode == CLOCK_EVT_MODE_UNUSED) + break; case CLOCK_EVT_MODE_UNUSED: + if (evt->mode == CLOCK_EVT_MODE_SHUTDOWN) + break; + case CLOCK_EVT_MODE_ONESHOT: /* One shot setup */ outb_p(0x38, PIT_MODE); udelay(10); @@ -102,7 +110,7 @@ void __init setup_pit_timer(void) * Start pit with the boot cpu mask and make it global after the * IO_APIC has been initialized. */ - pit_clockevent.cpumask = cpumask_of_cpu(0); + pit_clockevent.cpumask = cpumask_of_cpu(smp_processor_id()); pit_clockevent.mult = div_sc(CLOCK_TICK_RATE, NSEC_PER_SEC, 32); pit_clockevent.max_delta_ns = clockevent_delta2ns(0x7FFF, &pit_clockevent); |