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-rw-r--r--drivers/net/wireless/ath9k/main.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 7555c341338..32acaf7ff62 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -279,8 +279,15 @@ static void ath9k_rx_prepare(struct ath_softc *sc,
rx_status->rate_idx = ath_rate2idx(sc, (status->rateKbps / 100));
rx_status->antenna = status->antenna;
- /* XXX Fix me, 64 cannot be the max rssi value, rigure it out */
- rx_status->qual = status->rssi * 100 / 64;
+ /* at 45 you will be able to use MCS 15 reliably. A more elaborate
+ * scheme can be used here but it requires tables of SNR/throughput for
+ * each possible mode used. */
+ rx_status->qual = status->rssi * 100 / 45;
+
+ /* rssi can be more than 45 though, anything above that
+ * should be considered at 100% */
+ if (rx_status->qual > 100)
+ rx_status->qual = 100;
if (status->flags & ATH_RX_MIC_ERROR)
rx_status->flag |= RX_FLAG_MMIC_ERROR;