From fe29f54cd574eab7b521445419f355c0ecd995cc Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 10 Apr 2013 14:01:18 +0300 Subject: [PATCH] ipw2x00: move to kstrto* functions There is better to use kstrto* instead of simple_strtoul. In this case it applies a bit stricter rules for input as well. Signed-off-by: Andy Shevchenko Signed-off-by: John W. Linville --- drivers/net/wireless/ipw2x00/ipw2100.c | 32 ++++++-------------------- 1 file changed, 7 insertions(+), 25 deletions(-) diff --git a/drivers/net/wireless/ipw2x00/ipw2100.c b/drivers/net/wireless/ipw2x00/ipw2100.c index cb066f62879d..15920aaa5dd6 100644 --- a/drivers/net/wireless/ipw2x00/ipw2100.c +++ b/drivers/net/wireless/ipw2x00/ipw2100.c @@ -4167,17 +4167,11 @@ static ssize_t show_debug_level(struct device_driver *d, char *buf) static ssize_t store_debug_level(struct device_driver *d, const char *buf, size_t count) { - char *p = (char *)buf; u32 val; + int ret; - if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { - p++; - if (p[0] == 'x' || p[0] == 'X') - p++; - val = simple_strtoul(p, &p, 16); - } else - val = simple_strtoul(p, &p, 10); - if (p == buf) + ret = kstrtou32(buf, 0, &val); + if (ret) IPW_DEBUG_INFO(": %s is not in hex or decimal form.\n", buf); else ipw2100_debug_level = val; @@ -4238,27 +4232,15 @@ static ssize_t store_scan_age(struct device *d, struct device_attribute *attr, { struct ipw2100_priv *priv = dev_get_drvdata(d); struct net_device *dev = priv->net_dev; - char buffer[] = "00000000"; - unsigned long len = - (sizeof(buffer) - 1) > count ? count : sizeof(buffer) - 1; unsigned long val; - char *p = buffer; + int ret; (void)dev; /* kill unused-var warning for debug-only code */ IPW_DEBUG_INFO("enter\n"); - strncpy(buffer, buf, len); - buffer[len] = 0; - - if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { - p++; - if (p[0] == 'x' || p[0] == 'X') - p++; - val = simple_strtoul(p, &p, 16); - } else - val = simple_strtoul(p, &p, 10); - if (p == buffer) { + ret = kstrtoul(buf, 0, &val); + if (ret) { IPW_DEBUG_INFO("%s: user supplied invalid value.\n", dev->name); } else { priv->ieee->scan_age = val; @@ -4266,7 +4248,7 @@ static ssize_t store_scan_age(struct device *d, struct device_attribute *attr, } IPW_DEBUG_INFO("exit\n"); - return len; + return strnlen(buf, count); } static DEVICE_ATTR(scan_age, S_IWUSR | S_IRUGO, show_scan_age, store_scan_age); -- 2.30.2