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tools: move pcmcia crc32hash tool from Documentation

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Move pcmcia crc32hash tool from Documentation to tools/pcmcia and
remove it from Documentation Makefile. Update location information
for this tool. Create a new Makefile to build pcmcia. It can be built
from top level directory or from pcmcia directory:

Run make -C tools/pcmcia or cd tools/pcmcia; make

Acked-by: Dominik Brodowski <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Jonathan Corbet <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>
This commit is contained in:
Shuah Khan 2016-09-21 16:54:36 -06:00
commit a67cd5482f
7 changed files with 13 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

1
Documentation/pcmcia/.gitignore vendored
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@ -1 +0,0 @@
crc32hash

7
Documentation/pcmcia/Makefile
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@ -1,7 +0,0 @@
# List of programs to build
hostprogs-y := crc32hash
# Tell kbuild to always build the programs
always := $(hostprogs-y)
HOSTCFLAGS_crc32hash.o += -I$(objtree)/usr/include

32
Documentation/pcmcia/crc32hash.c
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@ -1,32 +0,0 @@
/* crc32hash.c - derived from linux/lib/crc32.c, GNU GPL v2 */
/* Usage example:
$ ./crc32hash "Dual Speed"
*/
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
static 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((unsigned char const *)argv[1], strlen(argv[1]));
printf("0x%x\n", result);
return 0;
}

4
Documentation/pcmcia/devicetable.txt
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@ -27,7 +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 crc32hash (see Documentation/pcmcia/crc32hash.c)
Alternatively, you can use crc32hash (see tools/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"
$ tools/pcmcia/crc32hash "Dual Speed"