Commit bedc572e authored by Yang Zhang's avatar Yang Zhang Committed by Anthony Liguori
Browse files

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



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: default avatarYang Zhang <yang.z.zhang@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent 6a38e0dc

hw/mc146818rtc.c

+1 −9
Original line number Diff line number Diff line
@@ -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;

            }

            rtc_timer_update(s, qemu_get_clock_ns(rtc_clock));

            break;

        case RTC_REG_C: