mac80211: stop queues across suspend/resume

Even though userland probably cannot submit packets, there might
still be some coming, and that's no good when the driver doesn't
expect them. Stop the queues across suspend/resume.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index fbb91f1aebb2..ad12c2a03a95 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -598,6 +598,7 @@ enum queue_stop_reason {
         IEEE80211_QUEUE_STOP_REASON_PS,
         IEEE80211_QUEUE_STOP_REASON_CSA,
         IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
+        IEEE80211_QUEUE_STOP_REASON_SUSPEND,
 };
 
 struct ieee80211_master_priv {
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 44525f517077..c923ceb089a3 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -11,6 +11,9 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
         struct ieee80211_if_init_conf conf;
         struct sta_info *sta;
 
+        ieee80211_stop_queues_by_reason(hw,
+                        IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+
         flush_workqueue(local->hw.workqueue);
 
         /* disable keys */
@@ -113,5 +116,8 @@ int __ieee80211_resume(struct ieee80211_hw *hw)
         ieee80211_configure_filter(local);
         netif_addr_unlock_bh(local->mdev);
 
+        ieee80211_wake_queues_by_reason(hw,
+                        IEEE80211_QUEUE_STOP_REASON_SUSPEND);
+
         return 0;
 }