wifi: iwlwifi: mld: initialize regulatory early

Since iwlmld claims wiphys to be self-managed, it needs to
have a regdomain registered before the wiphy is registered
to avoid issues when trying to get the regdomain, e.g. via
"iw phy phy0 reg get".

Move the initialization early, on every FW start not just
when starting to really operate it. This also requires the
self-managed flag to be set early.

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Miri Korenblit <[email protected]>
Link: https://patch.msgid.link/20250309073442.10ab8fed94e9.I7c8dee3d14c7427a56882739f82546c6492f3b10@changeid
Signed-off-by: Johannes Berg <[email protected]>

Author: jmberg-intel

drivers/net/wireless/intel/iwlwifi/mld/fw.c

@@ -339,6 +339,10 @@ int iwl_mld_load_fw(struct iwl_mld *mld)
 	if (ret)
 		return ret;
 
+	ret = iwl_mld_init_mcc(mld);
+	if (ret)
+		return ret;
+
 	mld->fw_status.running = true;
 
 	return 0;
@@ -481,10 +485,6 @@ static int iwl_mld_config_fw(struct iwl_mld *mld)
 	if (ret)
 		return ret;
 
-	ret = iwl_mld_init_mcc(mld);
-	if (ret)
-		return ret;
-
 	if (mld->fw_status.in_hw_restart) {
 		iwl_mld_send_recovery_cmd(mld, ERROR_RECOVERY_UPDATE_DB);
 		iwl_mld_time_sync_fw_config(mld);

drivers/net/wireless/intel/iwlwifi/mld/mac80211.c

@@ -164,14 +164,6 @@ static void iwl_mld_hw_set_security(struct iwl_mld *mld)
 			      NL80211_EXT_FEATURE_BEACON_PROTECTION);
 }
 
-static void iwl_mld_hw_set_regulatory(struct iwl_mld *mld)
-{
-	struct wiphy *wiphy = mld->wiphy;
-
-	wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
-	wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
-}
-
 static void iwl_mld_hw_set_antennas(struct iwl_mld *mld)
 {
 	struct wiphy *wiphy = mld->wiphy;
@@ -415,7 +407,6 @@ int iwl_mld_register_hw(struct iwl_mld *mld)
 	iwl_mld_hw_set_addresses(mld);
 	iwl_mld_hw_set_channels(mld);
 	iwl_mld_hw_set_security(mld);
-	iwl_mld_hw_set_regulatory(mld);
 	iwl_mld_hw_set_pm(mld);
 	iwl_mld_hw_set_antennas(mld);
 	iwl_mac_hw_set_radiotap(mld);

drivers/net/wireless/intel/iwlwifi/mld/mld.c

@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2024-2025 Intel Corporation
  */
-
+#include <linux/rtnetlink.h>
 #include <net/mac80211.h>
 
 #include "fw/api/rx.h"
@@ -50,6 +50,14 @@ static void __exit iwl_mld_exit(void)
 }
 module_exit(iwl_mld_exit);
 
+static void iwl_mld_hw_set_regulatory(struct iwl_mld *mld)
+{
+	struct wiphy *wiphy = mld->wiphy;
+
+	wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
+	wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
+}
+
 VISIBLE_IF_IWLWIFI_KUNIT
 void iwl_construct_mld(struct iwl_mld *mld, struct iwl_trans *trans,
 		       const struct iwl_cfg *cfg, const struct iwl_fw *fw,
@@ -67,7 +75,6 @@ void iwl_construct_mld(struct iwl_mld *mld, struct iwl_trans *trans,
 
 	/* Setup async RX handling */
 	spin_lock_init(&mld->async_handlers_lock);
-	INIT_LIST_HEAD(&mld->async_handlers_list);
 	wiphy_work_init(&mld->async_handlers_wk,
 			iwl_mld_async_handlers_wk);
 
@@ -387,9 +394,13 @@ iwl_op_mode_mld_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 	iwl_bios_setup_step(trans, &mld->fwrt);
 	mld->bios_enable_puncturing = iwl_uefi_get_puncturing(&mld->fwrt);
 
+	iwl_mld_hw_set_regulatory(mld);
+
 	/* Configure transport layer with the opmode specific params */
 	iwl_mld_configure_trans(op_mode);
 
+	/* needed for regulatory init */
+	rtnl_lock();
 	/* Needed for sending commands */
 	wiphy_lock(mld->wiphy);
 
@@ -401,13 +412,15 @@ iwl_op_mode_mld_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 
 	if (ret) {
 		wiphy_unlock(mld->wiphy);
+		rtnl_unlock();
 		iwl_fw_flush_dumps(&mld->fwrt);
 		goto free_hw;
 	}
 
 	iwl_mld_stop_fw(mld);
 
 	wiphy_unlock(mld->wiphy);
+	rtnl_unlock();
 
 	ret = iwl_mld_leds_init(mld);
 	if (ret)