genirq: remove irq_to_desc_alloc

[safe/jmp/linux-2.6] / arch / x86 / kernel / irqinit_64.c

diff --git a/arch/x86/kernel/irqinit_64.c b/arch/x86/kernel/irqinit_64.c
index b01d954..ff02353 100644 (file)
--- a/arch/x86/kernel/irqinit_64.c
+++ b/arch/x86/kernel/irqinit_64.c
@@ -142,29 +142,25 @@ void __init init_ISA_irqs(void)
        init_bsp_APIC();
        init_8259A(0);
 
-       for (i = 0; i < NR_IRQS; i++) {
-               irq_desc[i].status = IRQ_DISABLED;
-               irq_desc[i].action = NULL;
-               irq_desc[i].depth = 1;
-
-               if (i < 16) {
-                       /*
-                        * 16 old-style INTA-cycle interrupts:
-                        */
-                       set_irq_chip_and_handler_name(i, &i8259A_chip,
+       for (i = 0; i < 16; i++) {
+               /* first time call this irq_desc */
+               struct irq_desc *desc = irq_to_desc(i);
+
+               desc->status = IRQ_DISABLED;
+               desc->action = NULL;
+               desc->depth = 1;
+
+               /*
+                * 16 old-style INTA-cycle interrupts:
+                */
+               set_irq_chip_and_handler_name(i, &i8259A_chip,
                                                      handle_level_irq, "XT");
-               } else {
-                       /*
-                        * 'high' PCI IRQs filled in on demand
-                        */
-                       irq_desc[i].chip = &no_irq_chip;
-               }
        }
 }
 
 void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
 
-void __init smp_intr_init(void)
+static void __init smp_intr_init(void)
 {
 #ifdef CONFIG_SMP
        /*
@@ -195,11 +191,9 @@ void __init smp_intr_init(void)
 #endif
 }
 
-void __init apic_intr_init(void)
+static void __init apic_intr_init(void)
 {
-#ifdef CONFIG_SMP
        smp_intr_init();
-#endif
 
        alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
        alloc_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt);