#ifndef _LINUX_CRC7_H
  #define _LINUX_CRC7_H
  #include <linux/types.h>
  
  extern const u8 crc7_syndrome_table[256];
  
  static inline u8 crc7_byte(u8 crc, u8 data)
  {
  	return crc7_syndrome_table[(crc << 1) ^ data];
  }
  
  extern u8 crc7(u8 crc, const u8 *buffer, size_t len);
  
  #endif