1 files changed, 4 insertions, 1 deletions

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index ce1ac74baa73..ac7f3b6ad583 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1537,7 +1537,10 @@ static void __init setup_IO_APIC_irqs(void)
                 }
                 cfg = desc->chip_data;
                 add_pin_to_irq_node(cfg, node, apic_id, pin);
-                set_bit(pin, mp_ioapic_routing[apic_id].pin_programmed);
+                /*
+                 * don't mark it in pin_programmed, so later acpi could
+                 * set it correctly when irq < 16
+                 */
                 setup_IO_APIC_irq(apic_id, pin, irq, desc,
                                 irq_trigger(idx), irq_polarity(idx));
         }