From 5ad6ef5e06a1c9feb934c13b3a5f5303833fef4e Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Tue, 5 Nov 2013 09:18:08 -0800 Subject: cfg80211: add helper for kfree'ing last_request This is common code, this reduces the chance of making a mistake of how we free it. Signed-off-by: Luis R. Rodriguez Signed-off-by: Johannes Berg --- net/wireless/reg.c | 42 +++++++++++++++++++----------------------- 1 file changed, 19 insertions(+), 23 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 875fffc284c0..6ad7b2968862 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -202,11 +202,20 @@ static char user_alpha2[2]; module_param(ieee80211_regdom, charp, 0444); MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code"); +static void reg_kfree_last_request(void) +{ + struct regulatory_request *lr; + + lr = get_last_request(); + + if (lr != &core_request_world && lr) + kfree_rcu(lr, rcu_head); +} + static void reset_regdomains(bool full_reset, const struct ieee80211_regdomain *new_regdom) { const struct ieee80211_regdomain *r; - struct regulatory_request *lr; ASSERT_RTNL(); @@ -229,9 +238,7 @@ static void reset_regdomains(bool full_reset, if (!full_reset) return; - lr = get_last_request(); - if (lr != &core_request_world && lr) - kfree_rcu(lr, rcu_head); + reg_kfree_last_request(); rcu_assign_pointer(last_request, &core_request_world); } @@ -1353,14 +1360,11 @@ static void reg_set_request_processed(void) static enum reg_request_treatment reg_process_hint_core(struct regulatory_request *core_request) { - struct regulatory_request *lr; - - lr = get_last_request(); - if (lr != &core_request_world && lr) - kfree_rcu(lr, rcu_head); core_request->intersect = false; core_request->processed = false; + + reg_kfree_last_request(); rcu_assign_pointer(last_request, core_request); if (call_crda(core_request->alpha2)) @@ -1417,7 +1421,6 @@ static enum reg_request_treatment reg_process_hint_user(struct regulatory_request *user_request) { enum reg_request_treatment treatment; - struct regulatory_request *lr; treatment = __reg_process_hint_user(user_request); if (treatment == REG_REQ_IGNORE || @@ -1426,12 +1429,10 @@ reg_process_hint_user(struct regulatory_request *user_request) return treatment; } - lr = get_last_request(); - if (lr != &core_request_world && lr) - kfree_rcu(lr, rcu_head); - user_request->intersect = treatment == REG_REQ_INTERSECT; user_request->processed = false; + + reg_kfree_last_request(); rcu_assign_pointer(last_request, user_request); user_alpha2[0] = user_request->alpha2[0]; @@ -1480,7 +1481,6 @@ reg_process_hint_driver(struct wiphy *wiphy, { const struct ieee80211_regdomain *regd; enum reg_request_treatment treatment; - struct regulatory_request *lr; treatment = __reg_process_hint_driver(driver_request); @@ -1501,12 +1501,11 @@ reg_process_hint_driver(struct wiphy *wiphy, rcu_assign_pointer(wiphy->regd, regd); } - lr = get_last_request(); - if (lr != &core_request_world && lr) - kfree_rcu(lr, rcu_head); driver_request->intersect = treatment == REG_REQ_INTERSECT; driver_request->processed = false; + + reg_kfree_last_request(); rcu_assign_pointer(last_request, driver_request); /* @@ -1581,7 +1580,6 @@ reg_process_hint_country_ie(struct wiphy *wiphy, struct regulatory_request *country_ie_request) { enum reg_request_treatment treatment; - struct regulatory_request *lr; treatment = __reg_process_hint_country_ie(wiphy, country_ie_request); @@ -1603,12 +1601,10 @@ reg_process_hint_country_ie(struct wiphy *wiphy, return REG_REQ_IGNORE; } - lr = get_last_request(); - if (lr != &core_request_world && lr) - kfree_rcu(lr, rcu_head); - country_ie_request->intersect = false; country_ie_request->processed = false; + + reg_kfree_last_request(); rcu_assign_pointer(last_request, country_ie_request); if (call_crda(country_ie_request->alpha2)) -- cgit v1.2.3