diff --git a/include/asm-arm/ptrace.h b/include/asm-arm/ptrace.h
index 604e3a1..4377e22 100644
--- a/include/asm-arm/ptrace.h
+++ b/include/asm-arm/ptrace.h
@@ -142,11 +142,8 @@
 #endif
 
 #ifdef __KERNEL__
-extern void show_regs(struct pt_regs *);
-
-#define predicate(x)	(x & 0xf0000000)
+#define predicate(x)		((x) & 0xf0000000)
 #define PREDICATE_ALWAYS	0xe0000000
-
 #endif
 
 #endif /* __ASSEMBLY__ */