iwlwifi: use strict_strtoul instead of simple_strtoul

This patch makes use of strict_srtoul in sysfs code.
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -3619,11 +3619,11 @@ static ssize_t store_debug_level(struct device *d,
 				 const char *buf, size_t count)
 {
 	struct iwl_priv *priv = d->driver_data;
-	char *p = (char *)buf;
-	u32 val;
+	unsigned long val;
+	int ret;
 
-	val = simple_strtoul(p, &p, 0);
-	if (p == buf)
+	ret = strict_strtoul(buf, 0, &val);
+	if (ret)
 		printk(KERN_INFO DRV_NAME
 		       ": %s is not in hex or decimal form.\n", buf);
 	else
@@ -3695,11 +3695,11 @@ static ssize_t store_tx_power(struct device *d,
 			      const char *buf, size_t count)
 {
 	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
-	char *p = (char *)buf;
-	u32 val;
+	unsigned long val;
+	int ret;
 
-	val = simple_strtoul(p, &p, 10);
-	if (p == buf)
+	ret = strict_strtoul(buf, 10, &val);
+	if (ret)
 		printk(KERN_INFO DRV_NAME
 		       ": %s is not in decimal form.\n", buf);
 	else
@@ -3723,7 +3723,12 @@ static ssize_t store_flags(struct device *d,
 			   const char *buf, size_t count)
 {
 	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
-	u32 flags = simple_strtoul(buf, NULL, 0);
+	unsigned long val;
+	u32 flags;
+	int ret = strict_strtoul(buf, 0, &val);
+	if (!ret)
+		return ret;
+	flags = (u32)val;
 
 	mutex_lock(&priv->mutex);
 	if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
@@ -3731,8 +3736,7 @@ static ssize_t store_flags(struct device *d,
 		if (iwl_scan_cancel_timeout(priv, 100))
 			IWL_WARNING("Could not cancel scan.\n");
 		else {
-			IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
-				       flags);
+			IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
 			priv->staging_rxon.flags = cpu_to_le32(flags);
 			iwl4965_commit_rxon(priv);
 		}
@@ -3758,7 +3762,12 @@ static ssize_t store_filter_flags(struct device *d,
 				  const char *buf, size_t count)
 {
 	struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
-	u32 filter_flags = simple_strtoul(buf, NULL, 0);
+	unsigned long val;
+	u32 filter_flags;
+	int ret = strict_strtoul(buf, 0, &val);
+	if (!ret)
+		return ret;
+	filter_flags = (u32)val;
 
 	mutex_lock(&priv->mutex);
 	if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
@@ -3859,10 +3868,12 @@ static ssize_t store_retry_rate(struct device *d,
 				const char *buf, size_t count)
 {
 	struct iwl_priv *priv = dev_get_drvdata(d);
+	long val;
+	int ret  = strict_strtol(buf, 10, &val);
+	if (!ret)
+		return ret;
 
-	priv->retry_rate = simple_strtoul(buf, NULL, 0);
-	if (priv->retry_rate <= 0)
-		priv->retry_rate = 1;
+	priv->retry_rate = (val > 0) ? val : 1;
 
 	return count;
 }
@@ -3883,9 +3894,9 @@ static ssize_t store_power_level(struct device *d,
 {
 	struct iwl_priv *priv = dev_get_drvdata(d);
 	int ret;
-	int mode;
+	unsigned long mode;
+
 
-	mode = simple_strtoul(buf, NULL, 0);
 	mutex_lock(&priv->mutex);
 
 	if (!iwl_is_ready(priv)) {
@@ -3893,6 +3904,10 @@ static ssize_t store_power_level(struct device *d,
 		goto out;
 	}
 
+	ret = strict_strtoul(buf, 10, &mode);
+	if (!ret)
+		goto out;
+
 	ret = iwl_power_set_user_mode(priv, mode);
 	if (ret) {
 		IWL_DEBUG_MAC80211("failed setting power mode.\n");