b43legacy: Added get_survey callback in order to get channel noise

Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c
index b2df432d3c63..9304dc0f2f66 100644
--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -3481,6 +3481,23 @@ static int b43legacy_op_beacon_set_tim(struct ieee80211_hw *hw,
         return 0;
 }
 
+static int b43legacy_op_get_survey(struct ieee80211_hw *hw, int idx,
+                                   struct survey_info *survey)
+{
+        struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
+        struct b43legacy_wldev *dev = wl->current_dev;
+        struct ieee80211_conf *conf = &hw->conf;
+
+        if (idx != 0)
+                return -ENOENT;
+
+        survey->channel = conf->channel;
+        survey->filled = SURVEY_INFO_NOISE_DBM;
+        survey->noise = dev->stats.link_noise;
+
+        return 0;
+}
+
 static const struct ieee80211_ops b43legacy_hw_ops = {
         .tx                     = b43legacy_op_tx,
         .conf_tx                = b43legacy_op_conf_tx,
@@ -3493,6 +3510,7 @@ static const struct ieee80211_ops b43legacy_hw_ops = {
         .start                  = b43legacy_op_start,
         .stop                   = b43legacy_op_stop,
         .set_tim                = b43legacy_op_beacon_set_tim,
+        .get_survey             = b43legacy_op_get_survey,
         .rfkill_poll            = b43legacy_rfkill_poll,
 };