--- dahdi-linux-2.3.0/include/dahdi/kernel.h.orig	2010-05-20 12:00:40.441781672 +0900
+++ dahdi-linux-2.3.0/include/dahdi/kernel.h	2010-05-20 12:00:58.822611827 +0900
@@ -43,6 +43,7 @@
 #endif
 #include <linux/fs.h>
 #include <linux/ioctl.h>
+#include <linux/slab.h>
 
 #ifdef CONFIG_DAHDI_NET	
 #include <linux/hdlc.h>