Revert "fix power management timer overflow handling" (Avi Kivity).
The fix is bogus, causing sci to be deferred for longer and longer. Noticed by Alex Williamson. Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4904 c046a42c-6fe2-441c-8c8c-71466251a162
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			@ -105,7 +105,6 @@ static void pm_update_sci(PIIX4PMState *s)
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    if ((s->pmen & TMROF_EN) && !(pmsts & TMROF_EN)) {
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        expire_time = muldiv64(s->tmr_overflow_time, ticks_per_sec, PM_FREQ);
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        qemu_mod_timer(s->tmr_timer, expire_time);
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        s->tmr_overflow_time += 0x800000;
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    } else {
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        qemu_del_timer(s->tmr_timer);
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    }
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