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hw/i8254: fix vmstate load 

QEMU timer of channel 0 in i8254 is used to raise irq
at the specified moment of time. This irq can be disabled
with irq_disabled flag. But when vmstate of the pit is
loaded, timer may be rearmed despite the disabled interrupts.
This patch adds irq_disabled flag check to fix that.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Message-Id: <161537170060.6654.9430112746749476215.stgit@pasha-ThinkPad-X280>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2021-03-10 13:21:40 +03:00 committed by Paolo Bonzini
parent dc293f60b0
commit c963fee4b0
1 changed files with 1 additions and 1 deletions
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2
hw/timer/i8254.c
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@ -324,7 +324,7 @@ static void pit_post_load(PITCommonState *s)
{
PITChannelState *sc = &s->channels[0];
if (sc->next_transition_time != -1) {
if (sc->next_transition_time != -1 && !sc->irq_disabled) {
timer_mod(sc->irq_timer, sc->next_transition_time);
} else {
timer_del(sc->irq_timer);