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wifi: mt76: mt7915: fix bogus Tx/Rx airtime duration values

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Do not report measurements if the airtime counter was cleared since the
last update (possibly by firmware)

Signed-off-by: Henry Yen <henry.yen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Henry Yen 2024-02-22 11:24:46 +08:00 committed by Felix Fietkau
parent b7e56fa0cc
commit 296931843a
1 changed files with 9 additions and 2 deletions
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11
drivers/net/wireless/mediatek/mt76/mt7915/mac.c
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@ -140,8 +140,15 @@ static void mt7915_mac_sta_poll(struct mt7915_dev *dev)
msta->airtime_ac[i] = mt76_rr(dev, addr);
msta->airtime_ac[i + 4] = mt76_rr(dev, addr + 4);
tx_time[i] = msta->airtime_ac[i] - tx_last;
rx_time[i] = msta->airtime_ac[i + 4] - rx_last;
if (msta->airtime_ac[i] <= tx_last)
tx_time[i] = 0;
else
tx_time[i] = msta->airtime_ac[i] - tx_last;
if (msta->airtime_ac[i + 4] <= rx_last)
rx_time[i] = 0;
else
rx_time[i] = msta->airtime_ac[i + 4] - rx_last;
if ((tx_last | rx_last) & BIT(30))
clear = true;