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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/debugfs.c
parent34dd886c19547ea138634b98a615ccd1fe42cd20 (diff)
downloadlinux-0c2bef4621c5feb5bda9068c9964b2e9acf57017.tar.bz2
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/debugfs.c')
-rw-r--r--net/mac80211/debugfs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index fa16e54980a1..0e963bc1ceac 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -128,7 +128,7 @@ static ssize_t sta_tx_latency_stat_write(struct file *file,
if (!strcmp(buf, TX_LATENCY_DISABLED)) {
if (!tx_latency)
goto unlock;
- rcu_assign_pointer(local->tx_latency, NULL);
+ RCU_INIT_POINTER(local->tx_latency, NULL);
synchronize_rcu();
kfree(tx_latency);
goto unlock;