mt76x2: fix avg_rssi estimation

[ Upstream commit c990affd5abce1f338ac52539e092dad04647fb6 ]

Add leftover filter coefficients in IIR rssi estimation

Fixes: 7bc04215a66b ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Acked-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c b/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
index fcc37eb7ce0b41e9bedbe1bd0e4592f006043ba2..6b4fa7be573e207d210cef8d84343ec23d73bd4b 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2_phy.c
@@ -492,8 +492,10 @@ mt76x2_phy_update_channel_gain(struct mt76x2_dev *dev)
        u8 gain_delta;
        int low_gain;
 
-       dev->cal.avg_rssi[0] = (dev->cal.avg_rssi[0] * 15) / 16 + (rssi0 << 8);
-       dev->cal.avg_rssi[1] = (dev->cal.avg_rssi[1] * 15) / 16 + (rssi1 << 8);
+       dev->cal.avg_rssi[0] = (dev->cal.avg_rssi[0] * 15) / 16 +
+                              (rssi0 << 8) / 16;
+       dev->cal.avg_rssi[1] = (dev->cal.avg_rssi[1] * 15) / 16 +
+                              (rssi1 << 8) / 16;
        dev->cal.avg_rssi_all = (dev->cal.avg_rssi[0] +
                                 dev->cal.avg_rssi[1]) / 512;