--- zzzz-none-000/linux-3.10.107/arch/sparc/include/asm/cmpxchg_32.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/sparc/include/asm/cmpxchg_32.h	2021-02-04 17:41:59.000000000 +0000
@@ -11,8 +11,8 @@
 #ifndef __ARCH_SPARC_CMPXCHG__
 #define __ARCH_SPARC_CMPXCHG__
 
-extern unsigned long __xchg_u32(volatile u32 *m, u32 new);
-extern void __xchg_called_with_bad_pointer(void);
+unsigned long __xchg_u32(volatile u32 *m, u32 new);
+void __xchg_called_with_bad_pointer(void);
 
 static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr, int size)
 {
@@ -34,12 +34,11 @@
  *
  * Cribbed from <asm-parisc/atomic.h>
  */
-#define __HAVE_ARCH_CMPXCHG	1
 
 /* bug catcher for when unsupported size is used - won't link */
-extern void __cmpxchg_called_with_bad_pointer(void);
+void __cmpxchg_called_with_bad_pointer(void);
 /* we only need to support cmpxchg of a u32 on sparc */
-extern unsigned long __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
+unsigned long __cmpxchg_u32(volatile u32 *m, u32 old, u32 new_);
 
 /* don't worry...optimizer will get rid of most of this */
 static inline unsigned long