--- zzzz-none-000/linux-3.10.107/arch/powerpc/include/asm/hydra.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/include/asm/hydra.h	2021-02-04 17:41:59.000000000 +0000
@@ -95,7 +95,6 @@
 #define HYDRA_INT_SPARE		19
 
 extern int hydra_init(void);
-extern void macio_adb_init(void);
 
 #endif /* __KERNEL__ */