From 0a5549ed163520787f76b7515dfe9d9aa1c7ae37 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 23 Jun 2009 22:52:51 +0200
Subject: [PATCH] lib/checksum: fix one more thinko
When do_csum gets unaligned data, we really need to treat
the first byte as an even byte, not an odd byte, because
we swap the two halves later.
Found by Mike's checksum-selftest module.
Reported-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
lib/checksum.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/checksum.c b/lib/checksum.c
index b08c2d059024d..097508732f34f 100644
--- a/lib/checksum.c
+++ b/lib/checksum.c
@@ -57,9 +57,9 @@ static unsigned int do_csum(const unsigned char *buff, int len)
odd = 1 & (unsigned long) buff;
if (odd) {
#ifdef __LITTLE_ENDIAN
- result = *buff;
-#else
result += (*buff << 8);
+#else
+ result = *buff;
#endif
len--;
buff++;
--
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