Index: arch/ia32/include/debug.h
===================================================================
--- arch/ia32/include/debug.h	(revision af9a7c57cb5b1118b9fe7512bf136d64c3eee3b2)
+++ arch/ia32/include/debug.h	(revision dc747e33f6f5d74c7d1b7b50fda3b2fabff8fa82)
@@ -32,10 +32,4 @@
 #include <arch/asm.h>
 
-/** Return caller of this function 
- *
- * @param first_arg First argument of the function
- */
-#define CALLER(first_arg) 	 ((__address *) &first_arg)[-1];
-
 #define HERE get_ip()