[PATCH] ipw2200: Exponential averaging for signal and noise Level

This patch replaces sliding averaging by exponential averaging for
reporting the wireless statistics for signal and noise level for ipw2200.
See details from: http://www.ces.clemson.edu/linux/ipw2200_averages.shtml

Signed-off-by: Bill Moss <bmoss@clemson.edu>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/net/wireless/ipw2200.h b/drivers/net/wireless/ipw2200.h
index 4b980490070..1f2cab3f994 100644
--- a/drivers/net/wireless/ipw2200.h
+++ b/drivers/net/wireless/ipw2200.h
@@ -1153,11 +1153,9 @@ struct ipw_priv {
         u32 config;
         u32 capability;
 
-        u8 last_rx_rssi;
-        u8 last_noise;
         struct average average_missed_beacons;
-        struct average average_rssi;
-        struct average average_noise;
+        s16 exp_avg_rssi;
+        s16 exp_avg_noise;
         u32 port_type;
         int rx_bufs_min;          /**< minimum number of bufs in Rx queue */
         int rx_pend_max;          /**< maximum pending buffers for one IRQ */