diff -urN --exclude-from=/home/davej/.exclude linux-2.4.15pre6/arch/i386/kernel/pci-i386.c linux-ac/arch/i386/kernel/pci-i386.c
--- linux-2.4.15pre6/arch/i386/kernel/pci-i386.c	Sun Nov  4 17:31:58 2001
+++ linux-ac/arch/i386/kernel/pci-i386.c	Mon Nov 19 14:09:18 2001
@@ -110,6 +110,12 @@
 		reg = dev->rom_base_reg;
 	} else {
 		/* Somebody might have asked allocation of a non-standard resource */
+		return;
+	}
+
+	if((dev->class >> 8) == 0xFF00) {
+		printk("PCI: device %s/%d belongs to IO-APIC, ignoring\n",
+		       dev->slot_name, resource);
 		return;
 	}