mac80211: fix offchannel TX cookie matching

When I introduced in-kernel off-channel TX I
introduced a bug -- the work can't be canceled
again because the code clear the skb pointer.
Fix this by keeping track separately of whether
TX status has already been reported.

Cc: stable@kernel.org [2.6.38+]
Reported-by: Jouni Malinen <j@w1.fi>
Tested-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index af374fab1a1..94472eb34d7 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -577,7 +577,7 @@ ieee80211_offchannel_tx(struct ieee80211_work *wk)
                 /*
                  * After this, offchan_tx.frame remains but now is no
                  * longer a valid pointer -- we still need it as the
-                 * cookie for canceling this work.
+                 * cookie for canceling this work/status matching.
                  */
                 ieee80211_tx_skb(wk->sdata, wk->offchan_tx.frame);