carl9170: fix bad rssi reading

Fix rssi calculation error which was introduced in otus to ar9170
porting.

Signed-off-by: Hiroaki KAWAI <hiroaki.kawai@gmail.com>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c
index 924135b..d66533c 100644 (file)
--- a/drivers/net/wireless/ath/carl9170/rx.c
+++ b/drivers/net/wireless/ath/carl9170/rx.c
@@ -453,7 +453,7 @@ static void carl9170_rx_phy_status(struct ar9170 *ar,
        /* post-process RSSI */
        for (i = 0; i < 7; i++)
                if (phy->rssi[i] & 0x80)
-                       phy->rssi[i] = ((phy->rssi[i] & 0x7f) + 1) & 0x7f;
+                       phy->rssi[i] = ((~phy->rssi[i] & 0x7f) + 1) & 0x7f;
 
        /* TODO: we could do something with phy_errors */
        status->signal = ar->noise[0] + phy->rssi_combined;