iwlwifi: mvm: don't request mac80211 to disable/enable sta's queues

When operating in AP mode with NICs supporting the AP_LINK_PS hw flag,
mac80211 doesn't need to start/stop queueing tx for connected stations
because the FW already handles that.
Signed-off-by: NNaftali Goldstein <naftali.goldstein@intel.com>
Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618105614.64df994c8fbb.I0fa5cda3a5f893a396eef30a01522422be359e69@changeidSigned-off-by: NLuca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/sta.c

@@ -3794,8 +3794,12 @@ void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
 
 	mvm_sta->disable_tx = disable;
 
-	/* Tell mac80211 to start/stop queuing tx for this station */
-	ieee80211_sta_block_awake(mvm->hw, sta, disable);
+	/*
+	 * If sta PS state is handled by mac80211, tell it to start/stop
+	 * queuing tx for this station.
+	 */
+	if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))
+		ieee80211_sta_block_awake(mvm->hw, sta, disable);
 
 	iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);