From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 26 May 2010 06:43:03 +0000 (-0700)
Subject: revert "crc32: use __BYTE_ORDER macro for endian detection"
X-Git-Tag: firefly_0821_release~9833^2~1870
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0d2daf5cc858bd9305bae187310a1dabaad0a2db;p=firefly-linux-kernel-4.4.55.git

revert "crc32: use __BYTE_ORDER macro for endian detection"

It doesn't work on big-endian - those architectures don't define
__LITTLE_ENDIAN.

Cc: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/lib/crc32.c b/lib/crc32.c
index 3087ed899ee3..4855995fcde9 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -50,7 +50,7 @@ MODULE_LICENSE("GPL");
 static inline u32
 crc32_body(u32 crc, unsigned char const *buf, size_t len, const u32 (*tab)[256])
 {
-# if __BYTE_ORDER == __LITTLE_ENDIAN
+# ifdef __LITTLE_ENDIAN
 #  define DO_CRC(x) crc = tab[0][(crc ^ (x)) & 255] ^ (crc >> 8)
 #  define DO_CRC4 crc = tab[3][(crc) & 255] ^ \
 		tab[2][(crc >> 8) & 255] ^ \