[LIB] crc32c: Keep intermediate crc state in cpu order

crypto/crc32.c:chksum_final() is computing the digest as
*(__le32 *)out = ~cpu_to_le32(mctx->crc);
so the low-level crc32c_le routines should just keep
the crc in cpu order, otherwise it is getting swabbed
one too many times on big-endian machines.

Signed-off-by: Benny Halevy <bhalevy@fs1.bhalevy.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 2 insertions, 5 deletions

diff --git a/lib/libcrc32c.c b/lib/libcrc32c.c
index 802f11f0bf5b..b5c3287d8ea4 100644
--- a/lib/libcrc32c.c
+++ b/lib/libcrc32c.c
@@ -33,7 +33,6 @@
 #include <linux/crc32c.h>
 #include <linux/compiler.h>
 #include <linux/module.h>
-#include <asm/byteorder.h>
 
 MODULE_AUTHOR("Clay Haapala <chaapala@cisco.com>");
 MODULE_DESCRIPTION("CRC32c (Castagnoli) calculations");
@@ -161,15 +160,13 @@ static const u32 crc32c_table[256] = {
  */
 
 u32 __pure
-crc32c_le(u32 seed, unsigned char const *data, size_t length)
+crc32c_le(u32 crc, unsigned char const *data, size_t length)
 {
-        u32 crc = __cpu_to_le32(seed);
-        
         while (length--)
                 crc =
                     crc32c_table[(crc ^ *data++) & 0xFFL] ^ (crc >> 8);
 
-        return __le32_to_cpu(crc);
+        return crc;
 }
 
 #endif  /* CRC_LE_BITS == 8 */