2 files changed, 21 insertions, 0 deletions

diff --git a/drivers/net/wireless/libertas_tf/libertas_tf.h b/drivers/net/wireless/libertas_tf/libertas_tf.h
index 737eac92ef72..ad77b92d0b41 100644
--- a/drivers/net/wireless/libertas_tf/libertas_tf.h
+++ b/drivers/net/wireless/libertas_tf/libertas_tf.h
@@ -253,6 +253,9 @@ struct lbtf_private {
         u8 fw_ready;
         u8 surpriseremoved;
         struct sk_buff_head bc_ps_buf;
+
+        /* Most recently reported noise in dBm */
+        s8 noise;
 };
 
 /* 802.11-related definitions */
diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
index 817fffc0de4b..9278b3c8ee30 100644
--- a/drivers/net/wireless/libertas_tf/main.c
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -525,6 +525,22 @@ static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
         lbtf_deb_leave(LBTF_DEB_MACOPS);
 }
 
+static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
+                                struct survey_info *survey)
+{
+        struct lbtf_private *priv = hw->priv;
+        struct ieee80211_conf *conf = &hw->conf;
+
+        if (idx != 0)
+                return -ENOENT;
+
+        survey->channel = conf->channel;
+        survey->filled = SURVEY_INFO_NOISE_DBM;
+        survey->noise = priv->noise;
+
+        return 0;
+}
+
 static const struct ieee80211_ops lbtf_ops = {
         .tx                     = lbtf_op_tx,
         .start                  = lbtf_op_start,
@@ -535,6 +551,7 @@ static const struct ieee80211_ops lbtf_ops = {
         .prepare_multicast      = lbtf_op_prepare_multicast,
         .configure_filter       = lbtf_op_configure_filter,
         .bss_info_changed       = lbtf_op_bss_info_changed,
+        .get_survey             = lbtf_op_get_survey,
 };
 
 int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
@@ -555,6 +572,7 @@ int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
         stats.freq = priv->cur_freq;
         stats.band = IEEE80211_BAND_2GHZ;
         stats.signal = prxpd->snr;
+        priv->noise = prxpd->nf;
         /* Marvell rate index has a hole at value 4 */
         if (prxpd->rx_rate > 4)
                 --prxpd->rx_rate;