isdn/hysdn: Convert to kstrtoul_from_user
This patch replaces the code for getting an number from a userspace buffer by a simple call to kstroul_from_user. This makes it easier to read and less error prone. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 1 additions and 9 deletions
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@ -156,17 +156,9 @@ static ssize_t
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hysdn_log_write(struct file *file, const char __user *buf, size_t count, loff_t *off)
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{
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int rc;
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unsigned char valbuf[128];
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hysdn_card *card = file->private_data;
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if (count > (sizeof(valbuf) - 1))
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count = sizeof(valbuf) - 1; /* limit length */
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if (copy_from_user(valbuf, buf, count))
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return (-EFAULT); /* copy failed */
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valbuf[count] = 0; /* terminating 0 */
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rc = kstrtoul(valbuf, 0, &card->debug_flags);
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rc = kstrtoul_from_user(buf, count, 0, &card->debug_flags);
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if (rc < 0)
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return rc;
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hysdn_addlog(card, "debug set to 0x%lx", card->debug_flags);
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