From: Jérôme Pouiller <jerome.pouil...@silabs.com>

When mac80211 debug is enabled, the trace below appears:

    [60744.340037] wlan0: Rx A-MPDU request on aa:bb:cc:97:60:24 tid 0 result 
-524

This imply that ___ieee80211_start_rx_ba_session will prematurely exit
and frame reordering won't be enabled.

Fixes: e5da5fbd77411 ("staging: wfx: fix CCMP/TKIP replay protection")
Signed-off-by: Jérôme Pouiller <jerome.pouil...@silabs.com>
---
 drivers/staging/wfx/sta.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index 2b848b8985df..7a4c9f63c4a2 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -680,15 +680,16 @@ int wfx_ampdu_action(struct ieee80211_hw *hw,
                     struct ieee80211_vif *vif,
                     struct ieee80211_ampdu_params *params)
 {
-       /* Aggregation is implemented fully in firmware,
-        * including block ack negotiation. Do not allow
-        * mac80211 stack to do anything: it interferes with
-        * the firmware.
-        */
-
-       /* Note that we still need this function stubbed. */
-
-       return -ENOTSUPP;
+       // Aggregation is implemented fully in firmware
+       switch (params->action) {
+       case IEEE80211_AMPDU_RX_START:
+       case IEEE80211_AMPDU_RX_STOP:
+               // Just acknowledge it to enable frame re-ordering
+               return 0;
+       default:
+               // Leave the firmware doing its business for tx aggregation
+               return -ENOTSUPP;
+       }
 }
 
 int wfx_add_chanctx(struct ieee80211_hw *hw,
-- 
2.28.0

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