Index: arch/ia32/include/asm.h
===================================================================
--- arch/ia32/include/asm.h	(revision c9b8c5cb57d537d4baaa69738792fa1a16994b19)
+++ arch/ia32/include/asm.h	(revision ad36bd6b718c19bc3e77af6d6f92441a3d17a4d1)
@@ -60,5 +60,5 @@
 
 extern void write_dr0(__u32 v);
-extern __u32 read_dr0(void);
+extern inline __u32 read_dr0(void);
 
 #endif