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| author | Monam Agarwal <monamagarwal123@gmail.com> | 2014-03-24 00:51:43 +0530 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-04-09 10:55:30 +0200 |
| commit | 0c2bef4621c5feb5bda9068c9964b2e9acf57017 (patch) | |
| tree | 0c57534e45d0d072873dcab9b5fddf54b3fef6a7 /net/mac80211/ibss.c | |
| parent | 34dd886c19547ea138634b98a615ccd1fe42cd20 (diff) | |
| download | op-kernel-dev-0c2bef4621c5feb5bda9068c9964b2e9acf57017.zip op-kernel-dev-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/ibss.c')
| -rw-r--r-- | net/mac80211/ibss.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 06d2878..35e4f94 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -253,7 +253,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, presp = rcu_dereference_protected(ifibss->presp, lockdep_is_held(&sdata->wdev.mtx)); - rcu_assign_pointer(ifibss->presp, NULL); + RCU_INIT_POINTER(ifibss->presp, NULL); if (presp) kfree_rcu(presp, rcu_head); |
