--- zzzz-none-000/linux-3.10.107/arch/powerpc/boot/stdio.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/boot/stdio.c	2021-02-04 17:41:59.000000000 +0000
@@ -21,6 +21,18 @@
 	return sc - s;
 }
 
+#ifdef __powerpc64__
+
+# define do_div(n, base) ({						\
+	unsigned int __base = (base);					\
+	unsigned int __rem;						\
+	__rem = ((unsigned long long)(n)) % __base;			\
+	(n) = ((unsigned long long)(n)) / __base;			\
+	__rem;								\
+})
+
+#else
+
 extern unsigned int __div64_32(unsigned long long *dividend,
 			       unsigned int divisor);
 
@@ -39,6 +51,8 @@
 	__rem;								\
  })
 
+#endif /* __powerpc64__ */
+
 static int skip_atoi(const char **s)
 {
 	int i, c;