diff options
Diffstat (limited to 'Documentation/pcmcia/devicetable.txt')
-rw-r--r-- | Documentation/pcmcia/devicetable.txt | 36 |
1 files changed, 3 insertions, 33 deletions
diff --git a/Documentation/pcmcia/devicetable.txt b/Documentation/pcmcia/devicetable.txt index 3351c035..199afd1 100644 --- a/Documentation/pcmcia/devicetable.txt +++ b/Documentation/pcmcia/devicetable.txt @@ -27,37 +27,7 @@ pcmcia:m0149cC1ABf06pfn00fn00pa725B842DpbF1EFEE84pc0877B627pd00000000 The hex value after "pa" is the hash of product ID string 1, after "pb" for string 2 and so on. -Alternatively, you can use this small tool to determine the crc32 hash. -simply pass the string you want to evaluate as argument to this program, -e.g. +Alternatively, you can use crc32hash (see Documentation/pcmcia/crc32hash.c) +to determine the crc32 hash. Simply pass the string you want to evaluate +as argument to this program, e.g.: $ ./crc32hash "Dual Speed" - -------------------------------------------------------------------------- -/* crc32hash.c - derived from linux/lib/crc32.c, GNU GPL v2 */ -#include <string.h> -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> - -unsigned int crc32(unsigned char const *p, unsigned int len) -{ - int i; - unsigned int crc = 0; - while (len--) { - crc ^= *p++; - for (i = 0; i < 8; i++) - crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0); - } - return crc; -} - -int main(int argc, char **argv) { - unsigned int result; - if (argc != 2) { - printf("no string passed as argument\n"); - return -1; - } - result = crc32(argv[1], strlen(argv[1])); - printf("0x%x\n", result); - return 0; -} |