diff options
Diffstat (limited to 'arch/x86/kernel/irqinit_32.c')
| -rw-r--r-- | arch/x86/kernel/irqinit_32.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c index f6ff71cdaba..520e6c1c5d2 100644 --- a/arch/x86/kernel/irqinit_32.c +++ b/arch/x86/kernel/irqinit_32.c @@ -78,6 +78,15 @@ void __init init_ISA_irqs(void) } } +/* + * IRQ2 is cascade interrupt to second interrupt controller + */ +static struct irqaction irq2 = { + .handler = no_action, + .mask = CPU_MASK_NONE, + .name = "cascade", +}; + DEFINE_PER_CPU(vector_irq_t, vector_irq) = { [0 ... IRQ0_VECTOR - 1] = -1, [IRQ0_VECTOR] = 0, @@ -189,6 +198,9 @@ void __init native_init_IRQ(void) set_intr_gate(vector, interrupt[i]); } + if (!acpi_ioapic) + setup_irq(2, &irq2); + /* setup after call gates are initialised (usually add in * the architecture specific gates) */ |