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mac80211: scan: Replace rcu_assign_pointer() with RCU_INIT_POINTER()

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The use of "rcu_assign_pointer()" is NULLing out the pointer.
According to RCU_INIT_POINTER()'s block comment:
"1.   This use of RCU_INIT_POINTER() is NULLing out the pointer"
it is better to use it instead of rcu_assign_pointer() because it has a
smaller overhead.

The following Coccinelle semantic patch was used:
@@
@@

- rcu_assign_pointer
+ RCU_INIT_POINTER
  (..., NULL)

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Andreea-Cristina Bernat 2014-08-22 16:14:49 +03:00 committed by Johannes Berg
parent 5bc8c1f2b0
commit ad053a962f
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/scan.c
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@ -1094,7 +1094,7 @@ int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata)
if (rcu_access_pointer(local->sched_scan_sdata)) {
ret = drv_sched_scan_stop(local, sdata);
if (!ret)
rcu_assign_pointer(local->sched_scan_sdata, NULL);
RCU_INIT_POINTER(local->sched_scan_sdata, NULL);
}
out:
mutex_unlock(&local->mtx);