tables_csum.c 305 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
  4. */
  5. #include <common.h>
  6. #include <linux/ctype.h>
  7. u8 table_compute_checksum(void *v, int len)
  8. {
  9. u8 *bytes = v;
  10. u8 checksum = 0;
  11. int i;
  12. for (i = 0; i < len; i++)
  13. checksum -= bytes[i];
  14. return checksum;
  15. }