--- linux-2.4.19orig/drivers/acpi/bus.c	Sun Oct  6 21:39:56 2002
+++ linux-2.4.19acpi/drivers/acpi/bus.c	Thu Oct 10 00:08:02 2002
@@ -1883,11 +1883,14 @@
 
 #ifdef CONFIG_X86
         /* Ensure the SCI is set to level-triggered, active-low */
-        if (acpi_ioapic)
-         	mp_config_ioapic_for_sci(acpi_fadt.sci_int);
+#ifdef CONFIG_X86_IO_APIC
+	if (acpi_ioapic)
+		mp_config_ioapic_for_sci(acpi_fadt.sci_int);
 	else
-                eisa_set_level_irq(acpi_fadt.sci_int);
-#endif
+#else
+		eisa_set_level_irq(acpi_fadt.sci_int);
+#endif /* CONFIG_X86_IO_APIC */
+#endif /* CONFIG_X86 */
 
 	status = acpi_enable_subsystem(ACPI_FULL_INITIALIZATION);
 	if (ACPI_FAILURE(status)) {