diff -ruN linux-2.6.15.orig/arch/arm/mach-ixp4xx/ds101-pci.c linux-2.6.15.new/arch/arm/mach-ixp4xx/ds101-pci.c
--- linux-2.6.15.orig/arch/arm/mach-ixp4xx/ds101-pci.c  1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15.new/arch/arm/mach-ixp4xx/ds101-pci.c   2006-02-10 22:31:00.000000000 +0100
@@ -0,0 +1,69 @@
+/*
+ * arch/arm/mach-ixp4xx/ds101-pci.c
+ *
+ * DS101 board-level PCI initialization
+ *
+ * based on ixdp425-pci.c:
+ *     Copyright (C) 2002 Intel Corporation.
+ *     Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * Maintainer: http://www.nslu2-linux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+
+void __init ds101_pci_preinit(void)
+{
+       set_irq_type(IRQ_DS101_PCI_INTA, IRQT_LOW);
+       set_irq_type(IRQ_DS101_PCI_INTB, IRQT_LOW);
+       set_irq_type(IRQ_DS101_PCI_INTC, IRQT_LOW);
+
+       ixp4xx_pci_preinit();
+}
+
+static int __init ds101_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+       static int pci_irq_table[DS101_PCI_MAX_DEV][DS101_PCI_IRQ_LINES] =
+       {
+               { IRQ_DS101_PCI_INTA, -1, -1 },
+               { IRQ_DS101_PCI_INTB, -1, -1 },
+               { IRQ_DS101_PCI_INTC, -1, -1 },
+       };
+
+       int irq = -1;
+
+       if (slot >= 1 && slot <= DS101_PCI_MAX_DEV &&
+               pin >= 1 && pin <= DS101_PCI_IRQ_LINES)
+               irq = pci_irq_table[slot-1][pin-1];
+
+       return irq;
+}
+
+struct hw_pci __initdata ds101_pci = {
+       .nr_controllers = 1,
+       .preinit        = ds101_pci_preinit,
+       .swizzle        = pci_std_swizzle,
+       .setup          = ixp4xx_setup,
+       .scan           = ixp4xx_scan_bus,
+       .map_irq        = ds101_map_irq,
+};
+
+int __init ds101_pci_init(void)
+{
+       if (machine_is_ds101())
+               pci_common_init(&ds101_pci);
+
+       return 0;
+}
+
+subsys_initcall(ds101_pci_init);