diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 1b388b41d95d..7c7142ba3bd7 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -71,10 +71,10 @@ EXPORT_SYMBOL(dump_thread);
 
 /* required for SMP */
 
-extern void FASTCALL( __write_lock_failed(rwlock_t *rw));
+extern void __write_lock_failed(rwlock_t *rw);
 EXPORT_SYMBOL(__write_lock_failed);
 
-extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
+extern void __read_lock_failed(rwlock_t *rw);
 EXPORT_SYMBOL(__read_lock_failed);
 
 #endif
diff --git a/include/asm-um/linkage.h b/include/asm-um/linkage.h
index 78b862472b36..cdb3024a699a 100644
--- a/include/asm-um/linkage.h
+++ b/include/asm-um/linkage.h
@@ -6,7 +6,6 @@
 
 /* <linux/linkage.h> will pick sane defaults */
 #ifdef CONFIG_GPROF
-#undef FASTCALL
 #undef fastcall
 #endif