From fe6dab4e79e82ec35879bfe1a8968b7d15ac0d91 Mon Sep 17 00:00:00 2001
From: Yinghai Lu <yinghai@kernel.org>
Date: Fri, 8 Oct 2010 22:44:02 -0700
Subject: [PATCH] x86: Don't setup ioapic irq for sci twice
The sparseirq rework triggered a warning in the iommu code, which was
caused by setting up ioapic for ACPI irq 9 twice. This function is
solely to handle interrupts which are on a secondary ioapic and
outside the legacy irq range.
Replace the sparse irq_to_desc check with a non ifdeffed version.
[ tglx: Moved it before the ioapic sparse conversion and simplified
the inverse logic ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4CB00122.3030301@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
---
arch/x86/kernel/apic/io_apic.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 06da8fe2647e..5aae718a7133 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1565,11 +1565,11 @@ void setup_IO_APIC_irq_extra(u32 gsi)
return;
irq = pin_2_irq(idx, apic_id, pin);
-#ifdef CONFIG_SPARSE_IRQ
- desc = irq_to_desc(irq);
- if (desc)
+
+ /* Only handle the non legacy irqs on secondary ioapics */
+ if (apic_id == 0 || irq < NR_IRQS_LEGACY)
return;
-#endif
+
desc = irq_to_desc_alloc_node(irq, node);
if (!desc) {
printk(KERN_INFO "can not get irq_desc for %d\n", irq);
--
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