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i8259: Do not update IRQ output after spurious pic_poll_read 

If pic_poll_read finds no pending IRQ and return a spurious one instead,
no PIC state is changed, thus we do not need to call pic_update_irq.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Jan Kiszka 2011-10-07 09:19:42 +02:00 committed by Blue Swirl
parent 2e2b227499
commit afdb06f849
1 changed files with 0 additions and 1 deletions
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hw/i8259.c
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@ -393,7 +393,6 @@ static uint32_t pic_poll_read(PicState *s)
pic_update_irq(s->pics_state); pic_update_irq(s->pics_state);
} else { } else {
ret = 0x07; ret = 0x07;
pic_update_irq(s->pics_state);
} }
return ret; return ret;