* [PATCH] net/mac80211: Use RCU_INIT_POINTER(x, NULL) in chan.c
@ 2014-03-23 19:14 Monam Agarwal
0 siblings, 0 replies; only message in thread
From: Monam Agarwal @ 2014-03-23 19:14 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/chan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index bd1fd8e..b297bd3 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;
--
1.7.9.5
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