mac80211: allow drivers to sleep in ampdu_action

Allow drivers to sleep, and indicate this in
the documentation. ath9k has some locking I
don't understand, so keep it safe and disable
BHs in it, all other drivers look fine with
the context change.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index b8b76dd2c11e..e1b8456f3d2c 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1769,6 +1769,8 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
         struct ath_softc *sc = aphy->sc;
         int ret = 0;
 
+        local_bh_disable();
+
         switch (action) {
         case IEEE80211_AMPDU_RX_START:
                 if (!(sc->sc_flags & SC_OP_RXAGGR))
@@ -1798,6 +1800,8 @@ static int ath9k_ampdu_action(struct ieee80211_hw *hw,
                           "Unknown AMPDU action\n");
         }
 
+        local_bh_enable();
+
         return ret;
 }