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Date: Fri, 22 Aug 2014 16:14:49 +0300 From: Andreea-Cristina Bernat <bernat.ada@...il.com> To: linville@...driver.com, johannes@...solutions.net, davem@...emloft.net, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Cc: paulmck@...ux.vnet.ibm.com Subject: [PATCH] mac80211: scan: Replace rcu_assign_pointer() with RCU_INIT_POINTER() 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@...il.com> --- net/mac80211/scan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index f40661e..6c69d09 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -1058,7 +1058,7 @@ 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); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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