1 files changed, 10 insertions, 6 deletions

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index b436fc735aa4..a142e77693e1 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -397,7 +397,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
 
         /* Don't set up the ACPI SCI because it's already set up */
         if (acpi_gbl_FADT.sci_interrupt == gsi)
-                return gsi;
+                return mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC);
 
         trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
         polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
@@ -604,14 +604,18 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
 
 int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
 {
-        int irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK);
+        int irq;
 
-        if (irq >= 0) {
+        if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
+                *irqp = gsi;
+        } else {
+                irq = mp_map_gsi_to_irq(gsi,
+                                        IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK);
+                if (irq < 0)
+                        return -1;
                 *irqp = irq;
-                return 0;
         }
-
-        return -1;
+        return 0;
 }
 EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);