diff options
Diffstat (limited to 'kernel/drivers/acpi.c')
| -rw-r--r-- | kernel/drivers/acpi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/drivers/acpi.c b/kernel/drivers/acpi.c index e853a6f..0db4522 100644 --- a/kernel/drivers/acpi.c +++ b/kernel/drivers/acpi.c @@ -83,12 +83,14 @@ void hpet_install(int period) struct hpet_registers *r = (struct hpet_registers *)hpet->address.phys; printf("HPET tick period: %dns\n", HPET_MAX_PERIOD / r->tick_period); if ((r->timer0 & hpet_periodic_support) == hpet_periodic_support) { - r->config |= hpet_enable; - r->config |= hpet_legacy_replacement; r->timer0 |= hpet_periodic | hpet_set_accumulator | hpet_enable_timer; + r->config |= hpet_legacy_replacement; + r->config |= hpet_enable; assert(r->tick_period + period < HPET_MAX_PERIOD); r->timer_comparator0 = r->tick_period + period; r->timer_comparator0 = period; + } else { + hpet = NULL; } } else { hpet = NULL; |