As we want to move the IRQ update to pic_intack, ordering matters: the
slave ack must be executed before the master ack to avoid missing
further pending slave IRQs.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
irq = pic_get_irq(&s->pics[0]);
if (irq >= 0) {
- pic_intack(&s->pics[0], irq);
if (irq == 2) {
irq2 = pic_get_irq(&s->pics[1]);
if (irq2 >= 0) {
irq2 = 7;
}
intno = s->pics[1].irq_base + irq2;
-#if defined(DEBUG_PIC) || defined(DEBUG_IRQ_LATENCY)
- irq = irq2 + 8;
-#endif
} else {
intno = s->pics[0].irq_base + irq;
}
+ pic_intack(&s->pics[0], irq);
} else {
/* spurious IRQ on host controller */
irq = 7;
}
pic_update_irq(s);
+#if defined(DEBUG_PIC) || defined(DEBUG_IRQ_LATENCY)
+ if (irq == 2) {
+ irq = irq2 + 8;
+ }
+#endif
#ifdef DEBUG_IRQ_LATENCY
printf("IRQ%d latency=%0.3fus\n",
irq,