Due to an unrelated issue, the MT_RX_FILTR_CFG_PROMISC flag is currently
unset, which means that monitor mode is unconditionally enabled.
Toggle this flag based on the mac80211 monitor mode setting instead

Signed-off-by: Felix Fietkau <[email protected]>
---
 drivers/net/wireless/mediatek/mt76/mt76x2_main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_main.c 
b/drivers/net/wireless/mediatek/mt76/mt76x2_main.c
index 240e11508ecd..a69d441d9a47 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2_main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2_main.c
@@ -146,6 +146,15 @@ mt76x2_config(struct ieee80211_hw *hw, u32 changed)
 
        mutex_lock(&dev->mutex);
 
+       if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
+               if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
+                       dev->rxfilter |= MT_RX_FILTR_CFG_PROMISC;
+               else
+                       dev->rxfilter &= ~MT_RX_FILTR_CFG_PROMISC;
+
+               mt76_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter);
+       }
+
        if (changed & IEEE80211_CONF_CHANGE_POWER) {
                dev->txpower_conf = hw->conf.power_level * 2;
 
-- 
2.14.2

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