From: Monam Agarwal Date: Sun, 23 Mar 2014 19:23:40 +0000 (+0530) Subject: cfg80211: regulatory: use RCU_INIT_POINTER X-Git-Tag: v4.14-rc1~7158^2~11^2~7^2~46^2~103 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=34dd886c19547ea138634b98a615ccd1fe42cd20;p=platform%2Fkernel%2Flinux-rpi.git cfg80211: regulatory: 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 [rewrite commit log] Signed-off-by: Johannes Berg --- diff --git a/net/wireless/reg.c b/net/wireless/reg.c index f59aaac5..e0a746d 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -2594,7 +2594,7 @@ void wiphy_regulatory_deregister(struct wiphy *wiphy) reg_num_devs_support_basehint--; rcu_free_regdom(get_wiphy_regdom(wiphy)); - rcu_assign_pointer(wiphy->regd, NULL); + RCU_INIT_POINTER(wiphy->regd, NULL); if (lr) request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx);