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mac80211: remove unnecessary iflist_mtx locking 

The radar detection code changed a few times, and due to
the changes some iflist_mtx locking stayed in that isn't
actually necessary - remove it.

One version of the code needed it because an AP interface's
VLAN list was changed to use this, but then we moved the
list handling outside of the chanctx handling and thus the
locking was no longer needed.

Tested-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-12-18 19:44:59 +01:00
parent 5fe2bb8688
commit 6924d0138a
2 changed files with 0 additions and 4 deletions
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2
net/mac80211/cfg.c
View File

@ -2903,10 +2903,8 @@ static int ieee80211_start_radar_detection(struct wiphy *wiphy,
sdata->needed_rx_chains = local->rx_chains;
sdata->radar_required = true;
mutex_lock(&local->iflist_mtx);
err = ieee80211_vif_use_channel(sdata, chandef,
IEEE80211_CHANCTX_SHARED);
mutex_unlock(&local->iflist_mtx);
if (err)
return err;

2
net/mac80211/iface.c
View File

@ -826,9 +826,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
if (sdata->wdev.cac_started) {
chandef = sdata->vif.bss_conf.chandef;
WARN_ON(local->suspended);
mutex_lock(&local->iflist_mtx);
ieee80211_vif_release_channel(sdata);
mutex_unlock(&local->iflist_mtx);
cfg80211_cac_event(sdata->dev, &chandef,
NL80211_RADAR_CAC_ABORTED,
GFP_KERNEL);