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x86/ioapic.c: convert io_apic_level_ack_pending loop to normal for() loop
Convert the unconventional loop in io_apic_level_ack_pending() to a conventional for() loop. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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@ -410,13 +410,10 @@ static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
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unsigned long flags;
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spin_lock_irqsave(&ioapic_lock, flags);
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entry = cfg->irq_2_pin;
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for (;;) {
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for (entry = cfg->irq_2_pin; entry != NULL; entry = entry->next) {
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unsigned int reg;
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int pin;
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if (!entry)
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break;
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pin = entry->pin;
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reg = io_apic_read(entry->apic, 0x10 + pin*2);
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/* Is the remote IRR bit set? */
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@ -424,9 +421,6 @@ static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
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spin_unlock_irqrestore(&ioapic_lock, flags);
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return true;
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}
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if (!entry->next)
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break;
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entry = entry->next;
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}
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spin_unlock_irqrestore(&ioapic_lock, flags);
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