drivers: isdn: capi: use simple_strtol to convert numbers

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Tilman Schmidt <tilman@imap.cc>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c
index 2978bdaa6b8823473a029bce120237b94e133c2f..e54e79d4e2c124310e552f3daccb512d5cff25c2 100644 (file)
--- a/drivers/isdn/capi/capidrv.c
+++ b/drivers/isdn/capi/capidrv.c
@@ -1515,8 +1515,13 @@ static int decodeFVteln(char *teln, unsigned long *bmaskp, int *activep)
        while (*s) {
                int digit1 = 0;
                int digit2 = 0;
-               if (!isdigit(*s)) return -3;
-               while (isdigit(*s)) { digit1 = digit1*10 + (*s - '0'); s++; }
+               char *endp;
+
+               digit1 = simple_strtoul(s, &endp, 10);
+               if (s == endp)
+                       return -3;
+               s = endp;
+
                if (digit1 <= 0 || digit1 > 30) return -4;
                if (*s == 0 || *s == ',' || *s == ' ') {
                        bmask |= (1 << digit1);
@@ -1526,8 +1531,12 @@ static int decodeFVteln(char *teln, unsigned long *bmaskp, int *activep)
                }
                if (*s != '-') return -5;
                s++;
-               if (!isdigit(*s)) return -3;
-               while (isdigit(*s)) { digit2 = digit2*10 + (*s - '0'); s++; }
+
+               digit2 = simple_strtoul(s, &endp, 10);
+               if (s == endp)
+                       return -3;
+               s = endp;
+
                if (digit2 <= 0 || digit2 > 30) return -4;
                if (*s == 0 || *s == ',' || *s == ' ') {
                        if (digit1 > digit2)