ath9k: change the default antenna settings based on diversity

change the AR_DEF_ANTENNA register settings i.e setting default antenna
setting only for antenna diversity enabled chipsets. no point in
doing this for MIMO chipsets

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 14 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 4c8e296f663b..b1b0ec76157b 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -1923,15 +1923,20 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
                         skb = hdr_skb;
                 }
 
-                /*
-                 * change the default rx antenna if rx diversity chooses the
-                 * other antenna 3 times in a row.
-                 */
-                if (sc->rx.defant != rs.rs_antenna) {
-                        if (++sc->rx.rxotherant >= 3)
-                                ath_setdefantenna(sc, rs.rs_antenna);
-                } else {
-                        sc->rx.rxotherant = 0;
+
+                if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) {
+
+                        /*
+                         * change the default rx antenna if rx diversity
+                         * chooses the other antenna 3 times in a row.
+                         */
+                        if (sc->rx.defant != rs.rs_antenna) {
+                                if (++sc->rx.rxotherant >= 3)
+                                        ath_setdefantenna(sc, rs.rs_antenna);
+                        } else {
+                                sc->rx.rxotherant = 0;
+                        }
+
                 }
 
                 if (rxs->flag & RX_FLAG_MMIC_STRIPPED)