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drivers: isdn: get rid of custom strtoul()

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There were two methods isdn_gethex() and isdn_getnum() which are custom
implementations of strtoul(). Get rid of them in regard to
strict_strtoul() kernel's function.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Hansjoerg Lipp <hjlipp@web.de>
Cc: Tilman Schmidt <tilman@imap.cc>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: gigaset307x-common@lists.sourceforge.net
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Shevchenko 2010-07-15 02:37:20 +00:00 committed by David S. Miller
parent 3944ad6848
commit c9741380d3
1 changed files with 20 additions and 60 deletions
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80
drivers/isdn/gigaset/ev-layer.c
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@ -385,64 +385,18 @@ static const struct zsau_resp_t {
{NULL, ZSAU_UNKNOWN}
};
/*
* Get integer from char-pointer
*/
static int isdn_getnum(char *p)
{
int v = -1;
gig_dbg(DEBUG_EVENT, "string: %s", p);
while (*p >= '0' && *p <= '9')
v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0');
if (*p)
v = -1; /* invalid Character */
return v;
}
/*
* Get integer from char-pointer
*/
static int isdn_gethex(char *p)
{
int v = 0;
int c;
gig_dbg(DEBUG_EVENT, "string: %s", p);
if (!*p)
return -1;
do {
if (v > (INT_MAX - 15) / 16)
return -1;
c = *p;
if (c >= '0' && c <= '9')
c -= '0';
else if (c >= 'a' && c <= 'f')
c -= 'a' - 10;
else if (c >= 'A' && c <= 'F')
c -= 'A' - 10;
else
return -1;
v = v * 16 + c;
} while (*++p);
return v;
}
/* retrieve CID from parsed response
* returns 0 if no CID, -1 if invalid CID, or CID value 1..65535
*/
static int cid_of_response(char *s)
{
int cid;
unsigned long cid;
int rc;
if (s[-1] != ';')
return 0; /* no CID separator */
cid = isdn_getnum(s);
if (cid < 0)
rc = strict_strtoul(s, 10, &cid);
if (rc)
return 0; /* CID not numeric */
if (cid < 1 || cid > 65535)
return -1; /* CID out of range */
@ -612,21 +566,27 @@ void gigaset_handle_modem_response(struct cardstate *cs)
case RT_ZCAU:
event->parameter = -1;
if (curarg + 1 < params) {
i = isdn_gethex(argv[curarg]);
j = isdn_gethex(argv[curarg + 1]);
if (i >= 0 && i < 256 && j >= 0 && j < 256)
event->parameter = (unsigned) i << 8
| j;
curarg += 2;
unsigned long type, value;
i = strict_strtoul(argv[curarg++], 16, &type);
j = strict_strtoul(argv[curarg++], 16, &value);
if (i == 0 && type < 256 &&
j == 0 && value < 256)
event->parameter = (type << 8) | value;
} else
curarg = params - 1;
break;
case RT_NUMBER:
if (curarg < params) {
event->parameter = isdn_getnum(argv[curarg]);
++curarg;
} else
event->parameter = -1;
if (curarg < params) {
unsigned long res;
int rc;
rc = strict_strtoul(argv[curarg++], 10, &res);
if (rc == 0)
event->parameter = res;
}
gig_dbg(DEBUG_EVENT, "parameter==%d", event->parameter);
break;
}