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/*
* Copyright (c) 2013 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include "linux/crc8.h"
unsigned int crc8(const unsigned char *vptr, int len)
{
const unsigned char *data = vptr;
unsigned int crc = 0;
int i, j;
for (j = len; j; j--, data++) {
crc ^= (*data << 8);
for (i = 8; i; i--) {
if (crc & 0x8000)
crc ^= (0x1070 << 3);
crc <<= 1;
}
}
return (crc >> 8) & 0xff;
}
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