libertas_tf: add get_survey callback in order to get channel noise

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

1 files changed, 3 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 */