Merge branches 'topic/fix/hda' and 'topic/fix/sound-core' into for-linus

[karo-tx-linux.git] / net / mac80211 / debugfs_sta.c

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index b9902e425f096f336f93c97aa2a4494508de4272..b85c4f27b3618e4f783f47c328b1b0c5f3e43702 100644 (file)
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -199,7 +199,7 @@ static ssize_t sta_agg_status_write(struct file *file,
                /* toggle Rx aggregation command */
                tid_num = tid_num - 100;
                if (tid_static_rx[tid_num] == 1) {
-                       strcpy(state, "off ");
+                       strcpy(state, "off");
                        ieee80211_sta_stop_rx_ba_session(sta->sdata, da, tid_num, 0,
                                        WLAN_REASON_QSTA_REQUIRE_SETUP);
                        sta->ampdu_mlme.tid_state_rx[tid_num] |=
@@ -249,11 +249,22 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
        DECLARE_MAC_BUF(mbuf);
        u8 *mac;
 
+       sta->debugfs.add_has_run = true;
+
        if (!stations_dir)
                return;
 
        mac = print_mac(mbuf, sta->sta.addr);
 
+       /*
+        * This might fail due to a race condition:
+        * When mac80211 unlinks a station, the debugfs entries
+        * remain, but it is already possible to link a new
+        * station with the same address which triggers adding
+        * it to debugfs; therefore, if the old station isn't
+        * destroyed quickly enough the old station's debugfs
+        * dir might still be around.
+        */
        sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
        if (!sta->debugfs.dir)
                return;