mac80211: sparse RCU annotations
This adds sparse RCU annotations to most of
mac80211, only the mesh code remains to be
done.
Due the the previous patches, the annotations
are pretty simple. The only thing that this
actually changes is removing the RCU usage of
key->sta in debugfs since this pointer isn't
actually an RCU-managed pointer (it only has
a single assignment done before the key even
goes live). As that is otherwise harmless, I
decided to make it part of this patch.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 4054399..0d00ac9 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -449,7 +449,8 @@
/* APs need special treatment */
if (sdata->vif.type == NL80211_IFTYPE_AP) {
struct ieee80211_sub_if_data *vlan, *tmpsdata;
- struct beacon_data *old_beacon = sdata->u.ap.beacon;
+ struct beacon_data *old_beacon =
+ rtnl_dereference(sdata->u.ap.beacon);
/* sdata_running will return false, so this will disable */
ieee80211_bss_info_change_notify(sdata,