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-rw-r--r--hw/mc146818rtc.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c
index 93ceae7..657fa10 100644
--- a/hw/mc146818rtc.c
+++ b/hw/mc146818rtc.c
@@ -477,10 +477,13 @@ static uint32_t cmos_ioport_read(void *opaque, uint32_t addr)
case RTC_REG_C:
ret = s->cmos_data[s->cmos_index];
qemu_irq_lower(s->irq);
+ s->cmos_data[RTC_REG_C] = 0x00;
#ifdef TARGET_I386
if(s->irq_coalesced &&
+ (s->cmos_data[RTC_REG_B] & REG_B_PIE) &&
s->irq_reinject_on_ack_count < RTC_REINJECT_ON_ACK_COUNT) {
s->irq_reinject_on_ack_count++;
+ s->cmos_data[RTC_REG_C] |= REG_C_IRQF | REG_C_PF;
apic_reset_irq_delivered();
DPRINTF_C("cmos: injecting on ack\n");
qemu_irq_raise(s->irq);
@@ -489,11 +492,8 @@ static uint32_t cmos_ioport_read(void *opaque, uint32_t addr)
DPRINTF_C("cmos: coalesced irqs decreased to %d\n",
s->irq_coalesced);
}
- break;
}
#endif
-
- s->cmos_data[RTC_REG_C] = 0x00;
break;
default:
ret = s->cmos_data[s->cmos_index];