--- zzzz-none-000/linux-3.10.107/arch/sparc/kernel/prom.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/sparc/kernel/prom.h	2021-02-04 17:41:59.000000000 +0000
@@ -4,7 +4,7 @@
 #include <linux/spinlock.h>
 #include <asm/prom.h>
 
-extern void of_console_init(void);
+void of_console_init(void);
 
 extern unsigned int prom_early_allocated;