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revert "crc32: use __BYTE_ORDER macro for endian detection"

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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>
This commit is contained in:
Andrew Morton 2010-05-25 23:43:03 -07:00 • committed by Linus Torvalds
parent cc68e3be74
commit 0d2daf5cc8
1 changed files with 1 additions and 1 deletions
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2
lib/crc32.c
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@ -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] ^ \