--- drm_compat.h.orig	2007-02-24 11:03:25.000000000 +0100
+++ drm_compat.h	2007-02-24 14:52:32.000000000 +0100
@@ -168,7 +168,7 @@
 #define DRM_ODD_MM_COMPAT
 #endif
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22))
 #define DRM_FULL_MM_COMPAT
 #endif