diff -urpN -X /home/fletch/.diff.exclude 118-node_rebalance/arch/i386/kernel/irq.c 120-irq_affinity/arch/i386/kernel/irq.c
--- 118-node_rebalance/arch/i386/kernel/irq.c	Wed Mar 26 22:54:28 2003
+++ 120-irq_affinity/arch/i386/kernel/irq.c	Sun Apr 20 21:17:20 2003
@@ -871,8 +871,9 @@ static int irq_affinity_write_proc (stru
 		return -EINVAL;
 
 	irq_affinity[irq] = new_value;
+#ifndef CONFIG_X86_SUMMIT
 	irq_desc[irq].handler->set_affinity(irq, new_value);
-
+#endif
 	return full_count;
 }