[PATCH] i386/x86-64: simplify ioapic_register_intr()

Simplify (remove duplication of) code in ioapic_register_intr().
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/io_apic.c

@@ -1205,21 +1205,14 @@ static struct hw_interrupt_type ioapic_edge_type;
 
 static inline void ioapic_register_intr(int irq, int vector, unsigned long trigger)
 {
-	if (use_pci_vector() && !platform_legacy_irq(irq)) {
-		if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
-				trigger == IOAPIC_LEVEL)
-			irq_desc[vector].handler = &ioapic_level_type;
-		else
-			irq_desc[vector].handler = &ioapic_edge_type;
-		set_intr_gate(vector, interrupt[vector]);
-	} else	{
+	unsigned idx = use_pci_vector() && !platform_legacy_irq(irq) ? vector : irq;
+
 	if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
 			trigger == IOAPIC_LEVEL)
-			irq_desc[irq].handler = &ioapic_level_type;
+		irq_desc[idx].handler = &ioapic_level_type;
 	else
-			irq_desc[irq].handler = &ioapic_edge_type;
-		set_intr_gate(vector, interrupt[irq]);
-	}
+		irq_desc[idx].handler = &ioapic_edge_type;
+	set_intr_gate(vector, interrupt[idx]);
 }
 
 static void __init setup_IO_APIC_irqs(void)

arch/x86_64/kernel/io_apic.c

@@ -876,21 +876,14 @@ static struct hw_interrupt_type ioapic_edge_type;
 
 static inline void ioapic_register_intr(int irq, int vector, unsigned long trigger)
 {
-	if (use_pci_vector() && !platform_legacy_irq(irq)) {
-		if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
-				trigger == IOAPIC_LEVEL)
-			irq_desc[vector].handler = &ioapic_level_type;
-		else
-			irq_desc[vector].handler = &ioapic_edge_type;
-		set_intr_gate(vector, interrupt[vector]);
-	} else	{
+	unsigned idx = use_pci_vector() && !platform_legacy_irq(irq) ? vector : irq;
+
 	if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
 			trigger == IOAPIC_LEVEL)
-			irq_desc[irq].handler = &ioapic_level_type;
+		irq_desc[idx].handler = &ioapic_level_type;
 	else
-			irq_desc[irq].handler = &ioapic_edge_type;
-		set_intr_gate(vector, interrupt[irq]);
-	}
+		irq_desc[idx].handler = &ioapic_edge_type;
+	set_intr_gate(vector, interrupt[idx]);
 }
 
 static void __init setup_IO_APIC_irqs(void)