mwifiex: correction in mcs index check

mwifiex driver supports 2x2 chips as well. Hence valid mcs values
are 0 to 15. The check for mcs index is corrected in this patch.

For example: if 40MHz is enabled and mcs index is 11, "iw link"
command would show "tx bitrate: 108.0 MBit/s" without this patch.
Now it shows "tx bitrate: 108.0 MBit/s MCS 11 40Mhz" with the patch.

Cc: "3.2.y, 3.3.y, 3.4.y" <stable@vger.kernel.org>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index 5c7fd18..76b5c0f 100644 (file)
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -634,9 +634,9 @@ mwifiex_dump_station_info(struct mwifiex_private *priv,
 
        /*
         * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
-        * MCS index values for us are 0 to 7.
+        * MCS index values for us are 0 to 15.
         */
-       if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
+       if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
                sinfo->txrate.mcs = priv->tx_rate;
                sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
                /* 40MHz rate */