[PATCH] mac80211: minstrel_ht: fix rates selection

[Karl Beldan <karl.beldan@gmail.com>]

From: Karl Beldan <karl.beldan@rivierawaves.com>

When initializing rates selections starting indexes upon stats update,
the minstrel_sta->max_* rates should be 'group * MCS_GROUP_RATES + i'
not 'i'. This affects settings where one of the peers does not support
any of the rates of the group 0 (i.e. when ht_cap.mcs.rx_mask[0] == 0).

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
---
 net/mac80211/rc80211_minstrel_ht.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 88c932e..6c173a2 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -390,7 +390,8 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
 					mg->max_prob_rate = i;
 				if (!mi_rates_valid) {
 					mi->max_tp_rate = mi->max_tp_rate2 =
-						mi->max_prob_rate = i;
+						mi->max_prob_rate =
+						group * MCS_GROUP_RATES + i;
 					mi_rates_valid = true;
 				}
 				mg_rates_valid = true;
-- 
1.8.2