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authorStanislaw Gruszka <sgruszka@redhat.com>2012-07-24 08:35:39 +0200
committerJohannes Berg <johannes.berg@intel.com>2012-07-25 16:11:12 +0200
commit5e31fc0815a4e2c72b1b495fe7a0d8f9bfb9e4b4 (patch)
tree604c118db641c5787baeaa0aaa24bb8f9b2e35fa /net/wireless
parent3aa569c3fedbd0d16041d08bf6e89b8c43aee650 (diff)
wireless: reg: restore previous behaviour of chan->max_power calculations
commit eccc068e8e84c8fe997115629925e0422a98e4de Author: Hong Wu <Hong.Wu@dspg.com> Date: Wed Jan 11 20:33:39 2012 +0200 wireless: Save original maximum regulatory transmission power for the calucation of the local maximum transmit pow changed the way we calculate chan->max_power as min(chan->max_power, chan->max_reg_power). That broke rt2x00 (and perhaps some other drivers) that do not set chan->max_power. It is not so easy to fix this problem correctly in rt2x00. According to commit eccc068e8 changelog, change claim only to save maximum regulatory power - changing setting of chan->max_power was side effect. This patch restore previous calculations of chan->max_power and do not touch chan->max_reg_power. Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/reg.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index baf5704740e..460af03d814 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -891,7 +891,21 @@ static void handle_channel(struct wiphy *wiphy,
chan->max_antenna_gain = min(chan->orig_mag,
(int) MBI_TO_DBI(power_rule->max_antenna_gain));
chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp);
- chan->max_power = min(chan->max_power, chan->max_reg_power);
+ if (chan->orig_mpwr) {
+ /*
+ * Devices that have their own custom regulatory domain
+ * but also use WIPHY_FLAG_STRICT_REGULATORY will follow the
+ * passed country IE power settings.
+ */
+ if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+ wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY &&
+ wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY)
+ chan->max_power = chan->max_reg_power;
+ else
+ chan->max_power = min(chan->orig_mpwr,
+ chan->max_reg_power);
+ } else
+ chan->max_power = chan->max_reg_power;
}
static void handle_band(struct wiphy *wiphy,