diff options
Diffstat (limited to 'net/wireless/core.c')
| -rw-r--r-- | net/wireless/core.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c index 35d457b2751e..39d40d1e06db 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -31,7 +31,12 @@ MODULE_DESCRIPTION("wireless configuration support"); * only read the list, and that can happen quite * often because we need to do it for each command */ LIST_HEAD(cfg80211_drv_list); -DEFINE_MUTEX(cfg80211_drv_mutex); + +/* + * This is used to protect the cfg80211_drv_list, cfg80211_regdomain, and + * the last reguluatory request receipt in regd.c + */ +DEFINE_MUTEX(cfg80211_mutex); /* for debugfs */ static struct dentry *ieee80211_debugfs_dir; @@ -55,7 +60,7 @@ cfg80211_drv_by_wiphy_idx(int wiphy_idx) return result; } -/* requires cfg80211_drv_mutex to be held! */ +/* requires cfg80211_mutex to be held! */ static struct cfg80211_registered_device * __cfg80211_drv_from_info(struct genl_info *info) { @@ -102,7 +107,7 @@ cfg80211_get_dev_from_info(struct genl_info *info) { struct cfg80211_registered_device *drv; - mutex_lock(&cfg80211_drv_mutex); + mutex_lock(&cfg80211_mutex); drv = __cfg80211_drv_from_info(info); /* if it is not an error we grab the lock on @@ -111,7 +116,7 @@ cfg80211_get_dev_from_info(struct genl_info *info) if (!IS_ERR(drv)) mutex_lock(&drv->mtx); - mutex_unlock(&cfg80211_drv_mutex); + mutex_unlock(&cfg80211_mutex); return drv; } @@ -122,7 +127,7 @@ cfg80211_get_dev_from_ifindex(int ifindex) struct cfg80211_registered_device *drv = ERR_PTR(-ENODEV); struct net_device *dev; - mutex_lock(&cfg80211_drv_mutex); + mutex_lock(&cfg80211_mutex); dev = dev_get_by_index(&init_net, ifindex); if (!dev) goto out; @@ -133,7 +138,7 @@ cfg80211_get_dev_from_ifindex(int ifindex) drv = ERR_PTR(-ENODEV); dev_put(dev); out: - mutex_unlock(&cfg80211_drv_mutex); + mutex_unlock(&cfg80211_mutex); return drv; } @@ -149,7 +154,7 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, struct cfg80211_registered_device *drv; int wiphy_idx, taken = -1, result, digits; - mutex_lock(&cfg80211_drv_mutex); + mutex_lock(&cfg80211_mutex); /* prohibit calling the thing phy%d when %d is not its number */ sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); @@ -197,7 +202,7 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, result = 0; out_unlock: - mutex_unlock(&cfg80211_drv_mutex); + mutex_unlock(&cfg80211_mutex); if (result == 0) nl80211_notify_dev_rename(rdev); @@ -224,19 +229,19 @@ struct wiphy *wiphy_new(struct cfg80211_ops *ops, int sizeof_priv) drv->ops = ops; - mutex_lock(&cfg80211_drv_mutex); + mutex_lock(&cfg80211_mutex); drv->wiphy_idx = wiphy_counter++; if (unlikely(!wiphy_idx_valid(drv->wiphy_idx))) { wiphy_counter--; - mutex_unlock(&cfg80211_drv_mutex); + mutex_unlock(&cfg80211_mutex); /* ugh, wrapped! */ kfree(drv); return NULL; } - mutex_unlock(&cfg80211_drv_mutex); + mutex_unlock(&cfg80211_mutex); /* give it a proper name */ dev_set_name(&drv->wiphy.dev, PHY_NAME "%d", drv->wiphy_idx); @@ -314,7 +319,7 @@ int wiphy_register(struct wiphy *wiphy) /* check and set up bitrates */ ieee80211_set_bitrate_flags(wiphy); - mutex_lock(&cfg80211_drv_mutex); + mutex_lock(&cfg80211_mutex); /* set up regulatory info */ wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE); @@ -334,7 +339,7 @@ int wiphy_register(struct wiphy *wiphy) res = 0; out_unlock: - mutex_unlock(&cfg80211_drv_mutex); + mutex_unlock(&cfg80211_mutex); return res; } EXPORT_SYMBOL(wiphy_register); @@ -344,7 +349,7 @@ void wiphy_unregister(struct wiphy *wiphy) struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy); /* protect the device list */ - mutex_lock(&cfg80211_drv_mutex); + mutex_lock(&cfg80211_mutex); BUG_ON(!list_empty(&drv->netdev_list)); @@ -370,7 +375,7 @@ void wiphy_unregister(struct wiphy *wiphy) device_del(&drv->wiphy.dev); debugfs_remove(drv->wiphy.debugfsdir); - mutex_unlock(&cfg80211_drv_mutex); + mutex_unlock(&cfg80211_mutex); } EXPORT_SYMBOL(wiphy_unregister); |