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authorMonam Agarwal <monamagarwal123@gmail.com>2014-03-24 00:51:43 +0530
committerJohannes Berg <johannes.berg@intel.com>2014-04-09 10:55:30 +0200
commit0c2bef4621c5feb5bda9068c9964b2e9acf57017 (patch)
tree0c57534e45d0d072873dcab9b5fddf54b3fef6a7 /net/mac80211/chan.c
parent34dd886c19547ea138634b98a615ccd1fe42cd20 (diff)
downloadlinux-sh-0c2bef4621c5feb5bda9068c9964b2e9acf57017.tar.gz
mac80211: use RCU_INIT_POINTER
rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. However, in the case that NULL is assigned there's no structure to initialize so using RCU_INIT_POINTER instead is safe and more efficient. Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com> [squash eight tiny patches, rewrite commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/chan.c')
-rw-r--r--net/mac80211/chan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index bd1fd8ea5105..b297bd3043a8 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -392,7 +392,7 @@ static void ieee80211_unassign_vif_chanctx(struct ieee80211_sub_if_data *sdata,
lockdep_assert_held(&local->chanctx_mtx);
ctx->refcount--;
- rcu_assign_pointer(sdata->vif.chanctx_conf, NULL);
+ RCU_INIT_POINTER(sdata->vif.chanctx_conf, NULL);
sdata->vif.bss_conf.idle = true;