| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (c) 2013 Google, Inc |
| */ |
| |
| |
| #ifndef __linux_crc8_h |
| #define __linux_crc8_h |
| |
| /** |
| * crc8() - Calculate and return CRC-8 of the data |
| * |
| * This uses an x^8 + x^2 + x + 1 polynomial. A table-based algorithm would |
| * be faster, but for only a few bytes it isn't worth the code size |
| * |
| * @crc_start: CRC8 start value |
| * @vptr: Buffer to checksum |
| * @len: Length of buffer in bytes |
| * @return CRC8 checksum |
| */ |
| unsigned int crc8(unsigned int crc_start, const unsigned char *vptr, int len); |
| |
| #endif |
