diff -Naur linux-source-2.6.29-orig/drivers/pci/bus.c linux-source-2.6.29/drivers/pci/bus.c
--- linux-source-2.6.29-orig/drivers/pci/bus.c	2009-03-24 00:12:14.000000000 +0100
+++ linux-source-2.6.29/drivers/pci/bus.c	2009-04-06 11:04:41.000000000 +0200
@@ -41,6 +41,7 @@
 		void *alignf_data)
 {
 	int i, ret = -ENOMEM;
+	resource_size_t max = -1;
 
 	type_mask |= IORESOURCE_IO | IORESOURCE_MEM;
 
@@ -59,10 +60,15 @@
 		    !(res->flags & IORESOURCE_PREFETCH))
 			continue;
 
+		/* Limit address to 32 bits when requested */
+		if ((res->flags & IORESOURCE_MEM) &&
+		    (res->flags & IORESOURCE_PCI_32BIT))
+			max = (u32) -1;
+
 		/* Ok, try it out.. */
 		ret = allocate_resource(r, res, size,
 					r->start ? : min,
-					-1, align,
+					max, align,
 					alignf, alignf_data);
 		if (ret == 0)
 			break;
diff -Naur linux-source-2.6.29-orig/drivers/pci/setup-bus.c linux-source-2.6.29/drivers/pci/setup-bus.c
--- linux-source-2.6.29-orig/drivers/pci/setup-bus.c	2009-03-24 00:12:14.000000000 +0100
+++ linux-source-2.6.29/drivers/pci/setup-bus.c	2009-04-06 11:04:41.000000000 +0200
*** 430,444 ****
        if (ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM0) {
                b_res[2].start = pci_cardbus_mem_size;
                b_res[2].end = b_res[2].start + pci_cardbus_mem_size - 1;
!               b_res[2].flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH;
  
                b_res[3].start = pci_cardbus_mem_size;
                b_res[3].end = b_res[3].start + pci_cardbus_mem_size - 1;
!               b_res[3].flags |= IORESOURCE_MEM;
        } else {
                b_res[3].start = pci_cardbus_mem_size * 2;
                b_res[3].end = b_res[3].start + pci_cardbus_mem_size * 2 - 1;
!               b_res[3].flags |= IORESOURCE_MEM;
        }
  }
  
--- 430,444 ----
        if (ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM0) {
                b_res[2].start = pci_cardbus_mem_size;
                b_res[2].end = b_res[2].start + pci_cardbus_mem_size - 1;
!               b_res[2].flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH | IORESOURCE_PCI_32BIT;
  
                b_res[3].start = pci_cardbus_mem_size;
                b_res[3].end = b_res[3].start + pci_cardbus_mem_size - 1;
!               b_res[3].flags |= IORESOURCE_MEM | IORESOURCE_PCI_32BIT;
        } else {
                b_res[3].start = pci_cardbus_mem_size * 2;
                b_res[3].end = b_res[3].start + pci_cardbus_mem_size * 2 - 1;
!               b_res[3].flags |= IORESOURCE_MEM | IORESOURCE_PCI_32BIT;
        }
  }
  diff -Naur linux-source-2.6.29-orig/include/linux/ioport.h linux-source-2.6.29/include/linux/ioport.h
--- linux-source-2.6.29-orig/include/linux/ioport.h	2009-03-24 00:12:14.000000000 +0100
+++ linux-source-2.6.29/include/linux/ioport.h	2009-04-06 11:04:41.000000000 +0200
@@ -103,6 +103,7 @@
 
 /* PCI control bits.  Shares IORESOURCE_BITS with above PCI ROM.  */
 #define IORESOURCE_PCI_FIXED		(1<<4)	/* Do not move resource */
+#define IORESOURCE_PCI_32BIT		(1<<5)	/* Do not use 64bit address space (for cardbus devices) */
 
 /* PC/ISA/whatever - the normal PC address spaces: IO and memory */
 extern struct resource ioport_resource;