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-rw-r--r--arch/x86/kernel/irqinit.c18
1 files changed, 6 insertions, 12 deletions
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index 16919a9671fa..5aa523c2d573 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -44,15 +44,6 @@
* (these are usually mapped into the 0x30-0xff vector range)
*/
-/*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
-static struct irqaction irq2 = {
- .handler = no_action,
- .name = "cascade",
- .flags = IRQF_NO_THREAD,
-};
-
DEFINE_PER_CPU(vector_irq_t, vector_irq) = {
[0 ... NR_VECTORS - 1] = VECTOR_UNUSED,
};
@@ -84,7 +75,7 @@ void __init init_IRQ(void)
* On cpu 0, Assign ISA_IRQ_VECTOR(irq) to IRQ 0..15.
* If these IRQ's are handled by legacy interrupt-controllers like PIC,
* then this configuration will likely be static after the boot. If
- * these IRQ's are handled by more mordern controllers like IO-APIC,
+ * these IRQs are handled by more modern controllers like IO-APIC,
* then this vector space can be freed and re-used dynamically as the
* irq's migrate etc.
*/
@@ -104,6 +95,9 @@ void __init native_init_IRQ(void)
idt_setup_apic_and_irq_gates();
lapic_assign_system_vectors();
- if (!acpi_ioapic && !of_ioapic && nr_legacy_irqs())
- setup_irq(2, &irq2);
+ if (!acpi_ioapic && !of_ioapic && nr_legacy_irqs()) {
+ /* IRQ2 is cascade interrupt to second interrupt controller */
+ if (request_irq(2, no_action, IRQF_NO_THREAD, "cascade", NULL))
+ pr_err("%s: request_irq() failed\n", "cascade");
+ }
}