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Commit ef7c6725 authored by Johannes Berg's avatar Johannes Berg
Browse files

mac80211: don't do driver suspend with auth/assoc in progress 



Drivers can't really be expected to suspend properly while auth
or assoc is in progress since then they don't have any state
they could keep with WoWLAN, nor can they actually finish the
authentication or association. In fact, keeping this can cause
subtle issues with drivers like iwlwifi that refuse WoWLAN if
not associated, but have trouble figuring out what's going on
in the middle of association.

In any case, regardless of possible driver issues in this area,
it doesn't make sense for mac80211 to try to WoWLAN-suspend in
the middle of such operations, so stop them before.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent c8fff3dc

net/mac80211/pm.c

+18 −1
Original line number Diff line number Diff line
@@ -61,7 +61,24 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 


	local->wowlan = wowlan && local->open_count;

	if (local->wowlan) {

		int err = drv_suspend(local, wowlan);

		int err;



		/* Drivers don't expect to suspend while some operations like

		 * authenticating or associating are in progress. It doesn't

		 * make sense anyway to accept that, since the authentication

		 * or association would never finish since the driver can't do

		 * that on its own.

		 * Thus, clean up in-progress auth/assoc first.

		 */

		list_for_each_entry(sdata, &local->interfaces, list) {

			if (!ieee80211_sdata_running(sdata))

				continue;

			if (sdata->vif.type != NL80211_IFTYPE_STATION)

				continue;

			ieee80211_mgd_quiesce(sdata);

		}



		err = drv_suspend(local, wowlan);

		if (err < 0) {

			local->quiescing = false;

			local->wowlan = false;