Still need to register the regular versions of the ioctls as COMPATIBLE_IOCTLs.

Apply with:
cd /usr/src/linux-2.6.5-udm1
patch -p1 < compat_ioctl.h.patch

--- diff/include/linux/compat_ioctl.h	2004-04-06 10:24:25.000000000 -0500
+++ source/include/linux/compat_ioctl.h	2004-04-06 11:22:16.000000000 -0500
@@ -136,6 +136,19 @@
 COMPATIBLE_IOCTL(DM_TABLE_DEPS_32)
 COMPATIBLE_IOCTL(DM_TABLE_STATUS_32)
 COMPATIBLE_IOCTL(DM_LIST_VERSIONS_32)
+COMPATIBLE_IOCTL(DM_VERSION)
+COMPATIBLE_IOCTL(DM_LIST_DEVICES)
+COMPATIBLE_IOCTL(DM_DEV_CREATE)
+COMPATIBLE_IOCTL(DM_DEV_REMOVE)
+COMPATIBLE_IOCTL(DM_DEV_RENAME)
+COMPATIBLE_IOCTL(DM_DEV_SUSPEND)
+COMPATIBLE_IOCTL(DM_DEV_STATUS)
+COMPATIBLE_IOCTL(DM_DEV_WAIT)
+COMPATIBLE_IOCTL(DM_TABLE_LOAD)
+COMPATIBLE_IOCTL(DM_TABLE_CLEAR)
+COMPATIBLE_IOCTL(DM_TABLE_DEPS)
+COMPATIBLE_IOCTL(DM_TABLE_STATUS)
+COMPATIBLE_IOCTL(DM_LIST_VERSIONS)
 /* Big K */
 COMPATIBLE_IOCTL(PIO_FONT)
 COMPATIBLE_IOCTL(GIO_FONT)