drivers: isdn: remove custom strtoul()
In this case we safe to use strict_strtoul().
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/hysdn/hysdn_proclog.c b/drivers/isdn/hysdn/hysdn_proclog.c
index 7003698..2ee93d0 100644
--- a/drivers/isdn/hysdn/hysdn_proclog.c
+++ b/drivers/isdn/hysdn/hysdn_proclog.c
@@ -16,6 +16,7 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/mutex.h>
+#include <linux/kernel.h>
#include "hysdn_defs.h"
@@ -155,9 +156,8 @@
hysdn_log_write(struct file *file, const char __user *buf, size_t count, loff_t * off)
{
unsigned long u = 0;
- int found = 0;
- unsigned char *cp, valbuf[128];
- long base = 10;
+ int rc;
+ unsigned char valbuf[128];
hysdn_card *card = file->private_data;
if (count > (sizeof(valbuf) - 1))
@@ -166,32 +166,10 @@
return (-EFAULT); /* copy failed */
valbuf[count] = 0; /* terminating 0 */
- cp = valbuf;
- if ((count > 2) && (valbuf[0] == '0') && (valbuf[1] == 'x')) {
- cp += 2; /* pointer after hex modifier */
- base = 16;
- }
- /* scan the input for debug flags */
- while (*cp) {
- if ((*cp >= '0') && (*cp <= '9')) {
- found = 1;
- u *= base; /* adjust to next digit */
- u += *cp++ - '0';
- continue;
- }
- if (base != 16)
- break; /* end of number */
- if ((*cp >= 'a') && (*cp <= 'f')) {
- found = 1;
- u *= base; /* adjust to next digit */
- u += *cp++ - 'a' + 10;
- continue;
- }
- break; /* terminated */
- }
+ rc = strict_strtoul(valbuf, 0, &u);
- if (found) {
+ if (rc == 0) {
card->debug_flags = u; /* remember debug flags */
hysdn_addlog(card, "debug set to 0x%lx", card->debug_flags);
}