[RFC PATCH 01/18] powerpc/boot: fix do_div for 64bit wrapper

[Cédric Le Goater]

When the boot wrapper is compiled in 64bit, there is no need to
use __div64_32.

Signed-off-by: Cédric Le Goater <clg at fr.ibm.com>
---
 arch/powerpc/boot/stdio.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/powerpc/boot/stdio.c b/arch/powerpc/boot/stdio.c
index 5b57800bbc67..a701261b1781 100644
--- a/arch/powerpc/boot/stdio.c
+++ b/arch/powerpc/boot/stdio.c
@@ -21,6 +21,18 @@ size_t strnlen(const char * s, size_t count)
 	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 @@ extern unsigned int __div64_32(unsigned long long *dividend,
 	__rem;								\
  })
 
+#endif /* __powerpc64__ */
+
 static int skip_atoi(const char **s)
 {
 	int i, c;
-- 
1.7.10.4