Commit 02e5a769 authored by Felix Fietkau's avatar Felix Fietkau
Browse files

mt76: fix rssi ewma tracking 



The generic EWMA code cannot deal with negative numbers, so convert signal
to a positive number before adding it
Fixes mt76x2 AGC tuning

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent ef13edc0

drivers/net/wireless/mediatek/mt76/mac80211.c

+3 −1
Original line number Diff line number Diff line
@@ -567,7 +567,9 @@ mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb) 


	sta = container_of((void *) wcid, struct ieee80211_sta, drv_priv);



	ewma_signal_add(&wcid->rssi, status->signal);

	if (status->signal <= 0)

		ewma_signal_add(&wcid->rssi, -status->signal);



	wcid->inactive_count = 0;



	if (!test_bit(MT_WCID_FLAG_CHECK_PS, &wcid->flags))

drivers/net/wireless/mediatek/mt76/util.c

+1 −1
Original line number Diff line number Diff line
@@ -100,7 +100,7 @@ int mt76_get_min_avg_rssi(struct mt76_dev *dev) 


			spin_lock(&dev->rx_lock);

			if (wcid->inactive_count++ < 5)

				cur_rssi = ewma_signal_read(&wcid->rssi);

				cur_rssi = -ewma_signal_read(&wcid->rssi);

			else

				cur_rssi = 0;

			spin_unlock(&dev->rx_lock);