linux-imx

/*

 * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin

 * cleaned up code to current version of sparse and added the slicing-by-8

 * algorithm to the closely similar existing slicing-by-4 algorithm.

 *

 * Oct 15, 2000 Matt Domsch <Matt_Domsch@dell.com>

 * Nicer crc32 functions/docs submitted by linux@horizon.com.  Thanks!

 * Code was from the public domain, copyright abandoned.  Code was

 * subsequently included in the kernel, thus was re-licensed under the

 * GNU GPL v2.

 *

 * Oct 12, 2000 Matt Domsch <Matt_Domsch@dell.com>

 * Same crc32 function was used in 5 other places in the kernel.

 * I made one version, and deleted the others.

 * There are various incantations of crc32().  Some use a seed of 0 or ~0.

 * Some xor at the end with ~0.  The generic crc32() function takes

 * seed as an argument, and doesn't xor at the end.  Then individual

 * users can do whatever they need.

 *   drivers/net/smc9194.c uses seed ~0, doesn't xor with ~0.

 *   fs/jffs2 uses seed 0, doesn't xor with ~0.

 *   fs/partitions/efi.c uses seed ~0, xor's with ~0.

 *

 * This source code is licensed under the GNU General Public License,

 * Version 2.  See the file COPYING for more details.

 */

​

#include <linux/crc32.h>

#include <linux/module.h>

#include <linux/sched.h>

​

#include "crc32defs.h"

​

/* 4096 random bytes */

static u8 const __aligned(8) test_buf[] __initconst =

{

    0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,

    0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,

    0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,

    0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,

    0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,

    0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,

    0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,

    0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,

    0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,

    0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,

    0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,

    0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,

    0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,

    0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,

    0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,

    0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,

    0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,

    0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,

    0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,

    0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,

    0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,

    0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,

    0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,

    0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,

    0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,

    0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,

    0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,

    0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,