Index: arch/ia32/include/debug.h
===================================================================
--- arch/ia32/include/debug.h	(revision a3ac9a7e277c7bc7d416f4d9ad871db2c430696c)
+++ arch/ia32/include/debug.h	(revision 07bd114e358b12ea7dd76453301cc9cee94beb2d)
@@ -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()