From 9ea4fa158f3a038d5be82ccc7e142f198233f059 Mon Sep 17 00:00:00 2001 From: Eyal Shapira Date: Wed, 20 Jun 2012 13:10:14 +0300 Subject: [PATCH] mac80211: fix cleanup if driver suspend callback fails In case the driver suspend callback fails, mac80211 is left with stopped queues which prevents any further traffic as well as all STAs are left marked with WLAN_STA_BLOCK_BA which will cause any further ADDBA requests to be declined. Fix it by undoing both before returning from __iee80211_suspend. Reported-by: Vitaly Wool Signed-off-by: Eyal Shapira Signed-off-by: Johannes Berg --- net/mac80211/pm.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c index 98c128be3827..5c572e7a1a71 100644 --- a/net/mac80211/pm.c +++ b/net/mac80211/pm.c @@ -78,6 +78,16 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) if (err < 0) { local->quiescing = false; local->wowlan = false; + if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) { + mutex_lock(&local->sta_mtx); + list_for_each_entry(sta, + &local->sta_list, list) { + clear_sta_flag(sta, WLAN_STA_BLOCK_BA); + } + mutex_unlock(&local->sta_mtx); + } + ieee80211_wake_queues_by_reason(hw, + IEEE80211_QUEUE_STOP_REASON_SUSPEND); return err; } else if (err > 0) { WARN_ON(err != 1);