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Subject[PATCH 3/3] drivers: isdn: get rid of custom strtoul()
Date
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
---
drivers/isdn/gigaset/ev-layer.c | 80 ++++++++++-----------------------------
1 files changed, 20 insertions(+), 60 deletions(-)
diff --git a/drivers/isdn/gigaset/ev-layer.c b/drivers/isdn/gigaset/ev-layer.c
index a230ba7..a141876 100644
--- a/drivers/isdn/gigaset/ev-layer.c
+++ b/drivers/isdn/gigaset/ev-layer.c
@@ -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:
+ event->parameter = -1;
if (curarg < params) {
- event->parameter = isdn_getnum(argv[curarg]);
- ++curarg;
- } else
- event->parameter = -1;
+ 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;
}
--
1.7.1.1


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