mt76: mt7921: add flush operation

add flush operation to make sure cfg80211_mlme_deauth is able to flush
the deauthtication frame into air immediately.

Co-developed-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 11d85cf..f7552f5 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -1137,6 +1137,15 @@ static void mt7921_set_rekey_data(struct ieee80211_hw *hw,
 }
 #endif /* CONFIG_PM */
 
+static void mt7921_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+                        u32 queues, bool drop)
+{
+       struct mt7921_dev *dev = mt7921_hw_dev(hw);
+
+       wait_event_timeout(dev->mt76.tx_wait, !mt76_has_tx_pending(&dev->mphy),
+                          HZ / 2);
+}
+
 const struct ieee80211_ops mt7921_ops = {
        .tx = mt7921_tx,
        .start = mt7921_start,
@@ -1175,4 +1184,5 @@ const struct ieee80211_ops mt7921_ops = {
        .set_wakeup = mt7921_set_wakeup,
        .set_rekey_data = mt7921_set_rekey_data,
 #endif /* CONFIG_PM */
+       .flush = mt7921_flush,
 };