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RTC: Remove the logic to update time format when DM bit changed

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Changing the DM (binary/BCD) and 24/12 control bit doesn't affect the internal
registers. It only indicates what format is used for those registers.

Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Yang Zhang 2012-08-02 18:04:04 +02:00 committed by Anthony Liguori
parent 6a38e0dc36
commit bedc572eae
1 changed files with 1 additions and 9 deletions
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10
hw/mc146818rtc.c
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@ -220,15 +220,7 @@ static void cmos_ioport_write(void *opaque, uint32_t addr, uint32_t data)
rtc_set_time(s);
}
}
if (((s->cmos_data[RTC_REG_B] ^ data) & (REG_B_DM | REG_B_24H)) &&
!(data & REG_B_SET)) {
/* If the time format has changed and not in set mode,
update the registers immediately. */
s->cmos_data[RTC_REG_B] = data;
rtc_copy_date(s);
} else {
s->cmos_data[RTC_REG_B] = data;
}
s->cmos_data[RTC_REG_B] = data;
rtc_timer_update(s, qemu_get_clock_ns(rtc_clock));
break;
case RTC_REG_C: