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isdn: remove ishexdigit() in regard to isxdigit()

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Samll cleanup in drivers/isdn/gigaset/capi.c where own implementation of
isxdigit() has been changed to kernel native one.

Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Shevchenko 2010-02-22 13:10:22 +00:00 committed by David S. Miller
parent 1528b18f7e
commit 003bdb279b
1 changed files with 1 additions and 15 deletions
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16
drivers/isdn/gigaset/capi.c
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@ -170,20 +170,6 @@ static inline void ignore_cstruct_param(struct cardstate *cs, _cstruct param,
msgname, paramname);
}
/*
* check for legal hex digit
*/
static inline int ishexdigit(char c)
{
if (c >= '0' && c <= '9')
return 1;
if (c >= 'A' && c <= 'F')
return 1;
if (c >= 'a' && c <= 'f')
return 1;
return 0;
}
/*
* convert hex to binary
*/
@ -204,7 +190,7 @@ static int encode_ie(char *in, u8 *out, int maxlen)
{
int l = 0;
while (*in) {
if (!ishexdigit(in[0]) || !ishexdigit(in[1]) || l >= maxlen)
if (!isxdigit(in[0]) || !isxdigit(in[1]) || l >= maxlen)
return -1;
out[++l] = (hex2bin(in[0]) << 4) + hex2bin(in[1]);
in += 2;