* [PATCH] net/mac80211: Use RCU_INIT_POINTER(x, NULL) in cfg.c
@ 2014-03-23 19:13 Monam Agarwal
0 siblings, 0 replies; only message in thread
From: Monam Agarwal @ 2014-03-23 19:13 UTC (permalink / raw)
To: linville, johannes, davem, linux-wireless, netdev, linux-kernel
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL)
The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure.
And in the case of the NULL pointer, there is no structure to initialize.
So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL)
Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
---
net/mac80211/cfg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 1acb291..e92aeea 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1566,7 +1566,7 @@ static int ieee80211_change_station(struct wiphy *wiphy,
if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
sta->sdata->u.vlan.sta) {
- rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
+ RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
prev_4addr = true;
}
--
1.7.9.5
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