iwlwifi: move debug_level to sysfs/bus/pci/devices

This patch ports the debug_level from sysfs/bus/pci/drivers/iwl4965
to /sys/class/net/wlanX/device/debug_level

Signed-off-by: Ester Kummer <ester.kummer@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/Kconfig

@@ -97,13 +97,13 @@ config IWLWIFI_DEBUG
 	  control which debug output is sent to the kernel log by setting the
 	  value in
 
-	          /sys/bus/pci/drivers/${DRIVER}/debug_level
+		/sys/class/net/wlan0/device/debug_level
 
 	  This entry will only exist if this option is enabled.
 
 	  To set a value, simply echo an 8-byte hex value to the same file:
 
-		  % echo 0x43fff > /sys/bus/pci/drivers/${DRIVER}/debug_level
+		  % echo 0x43fff > /sys/class/net/wlan0/device/debug_level
 
 	  You can find the list of debug mask values in:
 		  drivers/net/wireless/iwlwifi/iwl-4965-debug.h

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

@@ -46,11 +46,6 @@ MODULE_VERSION(IWLWIFI_VERSION);
 MODULE_AUTHOR(DRV_COPYRIGHT);
 MODULE_LICENSE("GPL");
 
-#ifdef CONFIG_IWLWIFI_DEBUG
-u32 iwl_debug_level;
-EXPORT_SYMBOL(iwl_debug_level);
-#endif
-
 #define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np)    \
 	[IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP,      \
 				    IWL_RATE_SISO_##s##M_PLCP, \

drivers/net/wireless/iwlwifi/iwl-debug.h

@@ -30,7 +30,6 @@
 #define __iwl_debug_h__
 
 #ifdef CONFIG_IWLWIFI_DEBUG
-extern u32 iwl_debug_level;
 #define IWL_DEBUG(level, fmt, args...) \
 do { if (priv->debug_level & (level)) \
   dev_printk(KERN_ERR, &(priv->hw->wiphy->dev), "%c %s " fmt, \

drivers/net/wireless/iwlwifi/iwl4965-base.c

@@ -5963,13 +5963,18 @@ static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *sk
  * See the level definitions in iwl for details.
  */
 
-static ssize_t show_debug_level(struct device_driver *d, char *buf)
+static ssize_t show_debug_level(struct device *d,
+				struct device_attribute *attr, char *buf)
 {
-	return sprintf(buf, "0x%08X\n", iwl_debug_level);
+	struct iwl_priv *priv = d->driver_data;
+
+	return sprintf(buf, "0x%08X\n", priv->debug_level);
 }
-static ssize_t store_debug_level(struct device_driver *d,
+static ssize_t store_debug_level(struct device *d,
+				struct device_attribute *attr,
 				 const char *buf, size_t count)
 {
+	struct iwl_priv *priv = d->driver_data;
 	char *p = (char *)buf;
 	u32 val;
 
@@ -5978,13 +5983,14 @@ static ssize_t store_debug_level(struct device_driver *d,
 		printk(KERN_INFO DRV_NAME
 		       ": %s is not in hex or decimal form.\n", buf);
 	else
-		iwl_debug_level = val;
+		priv->debug_level = val;
 
 	return strnlen(buf, count);
 }
 
-static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
-		   show_debug_level, store_debug_level);
+static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
+			show_debug_level, store_debug_level);
+
 
 #endif /* CONFIG_IWLWIFI_DEBUG */
 
@@ -6431,6 +6437,9 @@ static struct attribute *iwl4965_sysfs_entries[] = {
 	&dev_attr_status.attr,
 	&dev_attr_temperature.attr,
 	&dev_attr_tx_power.attr,
+#ifdef CONFIG_IWLWIFI_DEBUG
+	&dev_attr_debug_level.attr,
+#endif
 
 	NULL
 };
@@ -6817,13 +6826,6 @@ static int __init iwl4965_init(void)
 		IWL_ERROR("Unable to initialize PCI module\n");
 		goto error_register;
 	}
-#ifdef CONFIG_IWLWIFI_DEBUG
-	ret = driver_create_file(&iwl_driver.driver, &driver_attr_debug_level);
-	if (ret) {
-		IWL_ERROR("Unable to create driver sysfs file\n");
-		goto error_debug;
-	}
-#endif
 
 	return ret;
 
@@ -6838,9 +6840,6 @@ error_register:
 
 static void __exit iwl4965_exit(void)
 {
-#ifdef CONFIG_IWLWIFI_DEBUG
-	driver_remove_file(&iwl_driver.driver, &driver_attr_debug_level);
-#endif
 	pci_unregister_driver(&iwl_driver);
 	iwl4965_rate_control_unregister();
 }