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mac80211: fix driver RSSI event calculations 

commit 8ec6d97871f37e4743678ea4a455bd59580aa0f4 upstream.

The ifmgd->ave_beacon_signal value cannot be taken as is for
comparisons, it must be divided by since it's represented
like that for better accuracy of the EWMA calculations. This
would lead to invalid driver RSSI events. Fix the used value.

Fixes: 615f7b9bb1 ("mac80211: add driver RSSI threshold events")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johannes Berg 2015-08-28 10:52:53 +02:00 committed by Greg Kroah-Hartman
parent 8fa88fa850
commit ad9550e54d
1 changed files with 1 additions and 1 deletions
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net/mac80211/mlme.c
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@ -3074,7 +3074,7 @@ ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
int sig = ifmgd->ave_beacon_signal;
int sig = ifmgd->ave_beacon_signal / 16;
int last_sig = ifmgd->last_ave_beacon_signal;
/*