cfg80211: add helper for kfree'ing and assigning last_request
This enforces proper RCU APIs accross the code. Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -212,6 +212,12 @@ static void reg_kfree_last_request(void)
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kfree_rcu(lr, rcu_head);
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}
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static void reg_update_last_request(struct regulatory_request *request)
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{
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reg_kfree_last_request();
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rcu_assign_pointer(last_request, request);
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}
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static void reset_regdomains(bool full_reset,
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const struct ieee80211_regdomain *new_regdom)
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{
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@ -238,8 +244,7 @@ static void reset_regdomains(bool full_reset,
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if (!full_reset)
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return;
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reg_kfree_last_request();
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rcu_assign_pointer(last_request, &core_request_world);
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reg_update_last_request(&core_request_world);
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}
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/*
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@ -1364,8 +1369,7 @@ reg_process_hint_core(struct regulatory_request *core_request)
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core_request->intersect = false;
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core_request->processed = false;
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reg_kfree_last_request();
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rcu_assign_pointer(last_request, core_request);
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reg_update_last_request(core_request);
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if (call_crda(core_request->alpha2))
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return REG_REQ_IGNORE;
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@ -1432,8 +1436,7 @@ reg_process_hint_user(struct regulatory_request *user_request)
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user_request->intersect = treatment == REG_REQ_INTERSECT;
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user_request->processed = false;
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reg_kfree_last_request();
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rcu_assign_pointer(last_request, user_request);
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reg_update_last_request(user_request);
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user_alpha2[0] = user_request->alpha2[0];
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user_alpha2[1] = user_request->alpha2[1];
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@ -1505,8 +1508,7 @@ reg_process_hint_driver(struct wiphy *wiphy,
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driver_request->intersect = treatment == REG_REQ_INTERSECT;
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driver_request->processed = false;
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reg_kfree_last_request();
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rcu_assign_pointer(last_request, driver_request);
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reg_update_last_request(driver_request);
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/*
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* Since CRDA will not be called in this case as we already
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@ -1604,8 +1606,7 @@ reg_process_hint_country_ie(struct wiphy *wiphy,
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country_ie_request->intersect = false;
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country_ie_request->processed = false;
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reg_kfree_last_request();
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rcu_assign_pointer(last_request, country_ie_request);
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reg_update_last_request(country_ie_request);
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if (call_crda(country_ie_request->alpha2))
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return REG_REQ_IGNORE;
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