[ 39/73] mwifiex: correction in mcs index check

From: Ben Hutchings
Date: Tue Jul 31 2012 - 00:56:42 EST


3.2-stable review patch. If anyone has any objections, please let me know.

------------------

From: Amitkumar Karwar <akarwar@xxxxxxxxxxx>

commit fe020120cb863ba918c6d603345342a880272c4d upstream.

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.

Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
Signed-off-by: Bing Zhao <bzhao@xxxxxxxxxxx>
Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/cfg80211.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index 5c7fd18..76b5c0f 100644
--- 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 */


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