If one can find an ack pending pin, there is no need to check
the rest of them.

Signed-off-by: Akinobu Mita
---
arch/x86/kernel/io_apic_64.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

Index: 2.6-git/arch/x86/kernel/io_apic_64.c
================================================== =================
--- 2.6-git.orig/arch/x86/kernel/io_apic_64.c
+++ 2.6-git/arch/x86/kernel/io_apic_64.c
@@ -155,11 +155,10 @@ static inline void io_apic_modify(unsign
writel(value, &io_apic->data);
}

-static int io_apic_level_ack_pending(unsigned int irq)
+static bool io_apic_level_ack_pending(unsigned int irq)
{
struct irq_pin_list *entry;
unsigned long flags;
- int pending = 0;

spin_lock_irqsave(&ioapic_lock, flags);
entry = irq_2_pin + irq;
@@ -172,13 +171,17 @@ static int io_apic_level_ack_pending(uns
break;
reg = io_apic_read(entry->apic, 0x10 + pin*2);
/* Is the remote IRR bit set? */
- pending |= (reg >> 14) & 1;
+ if ((reg >> 14) & 1) {
+ spin_unlock_irqrestore(&ioapic_lock, flags);
+ return true;
+ }
if (!entry->next)
break;
entry = irq_2_pin + entry->next;
}
spin_unlock_irqrestore(&ioapic_lock, flags);
- return pending;
+
+ return false;
}

/*

--
--
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