Commit c2d30667 authored by Jan Kiszka's avatar Jan Kiszka Committed by Anthony Liguori
Browse files

rtc: remove dead SQW IRQ code 



This was once introduced by commit 100d9891 but was never used in-tree
and then got broken by commit 32e0c826. Time to clean up.

Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Message-id: 520B6A27.4040207@siemens.com
Signed-off-by: default avatarAnthony Liguori <aliguori@amazon.com>
parent 2c8ebac7

hw/timer/mc146818rtc.c

+1 −8
Original line number Diff line number Diff line
@@ -70,7 +70,6 @@ typedef struct RTCState { 
    uint64_t last_update;

    int64_t offset;

    qemu_irq irq;

    qemu_irq sqw_irq;

    int it_shift;

    /* periodic timer */

    QEMUTimer *periodic_timer;
@@ -151,8 +150,7 @@ static void periodic_timer_update(RTCState *s, int64_t current_time) 


    period_code = s->cmos_data[RTC_REG_A] & 0x0f;

    if (period_code != 0

        && ((s->cmos_data[RTC_REG_B] & REG_B_PIE)

            || ((s->cmos_data[RTC_REG_B] & REG_B_SQWE) && s->sqw_irq))) {

        && (s->cmos_data[RTC_REG_B] & REG_B_PIE)) {

        if (period_code <= 2)

            period_code += 7;

        /* period in 32 Khz cycles */
@@ -202,11 +200,6 @@ static void rtc_periodic_timer(void *opaque) 
#endif

        qemu_irq_raise(s->irq);

    }

    if (s->cmos_data[RTC_REG_B] & REG_B_SQWE) {

        /* Not square wave at all but we don't want 2048Hz interrupts!

           Must be seen as a pulse.  */

        qemu_irq_raise(s->sqw_irq);

    }

}



/* handle update-ended timer */