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mac80211: correct wext transmit power handler

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Wext makes no assumptions about the contents of
data->txpower.fixed and data->txpower.value when
data->txpower.disabled is set, so do not update
the user-requested power level while disabling.

Also, when wext configures a really _fixed_ power
output [1], we should reject it instead of limiting it
to the regulatory constraint. If the user wants to set
a _limit_ [2] then we should honour that.

[1] iwconfig wlan0 txpower 20dBm fixed
[2] iwconfig wlan0 txpower 10dBm

This fixes
http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1942

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-04-07 15:22:28 +02:00
committed by John W. Linville
parent 853da11b94
commit 47afbaf5af
2 changed files with 34 additions and 9 deletions
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2
net/mac80211/main.c
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@ -258,7 +258,7 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
(chan->max_power - local->power_constr_level) :
chan->max_power;
if (local->user_power_level)
if (local->user_power_level >= 0)
power = min(power, local->user_power_level);
if (local->hw.conf.power_level != power) {