xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cfg80211: rename cfg80211_drv_mutex to cfg80211_mutex

Browse Source 
cfg80211_drv_mutex is protecting more than the driver list,
this renames it and documents what its currently supposed to
protect.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez
2009-02-21 00:04:21 -05:00
committed by John W. Linville
parent 85fd129a72
commit a1794390f1
4 changed files with 42 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
net/wireless/core.c
View File

@@ -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);