mac80211: fix rate control initialisation

In commit 2e92e6f2c50b4baf85cca968f0e6f1b5c0df7d39 ("mac80211: use rate
index in TX control") I forgot to initialise a few new variables to -1 which
means that the rate control algorithm is never triggered and 0 is used as
the only rate index, effectively fixing the transmit bitrate at the lowest
supported.

This patch adds the missing initialisation.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Bisected-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 16af30811f98..332ddcb1068a 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -947,6 +947,8 @@ __ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
         tx->local = local;
         tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
         tx->channel = local->hw.conf.channel;
+        tx->rate_idx = -1;
+        tx->last_frag_rate_idx = -1;
         /*
          * Set this flag (used below to indicate "automatic fragmentation"),
          * it will be cleared/left by radiotap as desired.