ath9k: Fix bug in retrieving average beacon rssi

Currently the beacon rssi that LPF gives is divided and rounded
up by ATH_RSSI_EP_MULTIPLIER twice. This will leave the incorrect rssi
in ANI. Having correct rssi in ANI fixes the connection stability at
< 30dB rssi range. This patch removes the unncessary computation of average
rssi over already valid average rssi. Also removes the redundant macros to
find average rssi.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/ath9k/ani.h b/drivers/net/wireless/ath/ath9k/ani.h
index 1199245..6273fd0 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ani.h
+++ b/drivers/net/wireless/ath/ath9k/ani.h
@@ -18,15 +18,10 @@
 #define ANI_H
 
 #define HAL_PROCESS_ANI           0x00000001
 #define ANI_H
 
 #define HAL_PROCESS_ANI           0x00000001

-#define ATH9K_RSSI_EP_MULTIPLIER  (1<<7)

 
 #define DO_ANI(ah) (((ah)->proc_phyerr & HAL_PROCESS_ANI))
 
 
 #define DO_ANI(ah) (((ah)->proc_phyerr & HAL_PROCESS_ANI))
 

-#define HAL_EP_RND(x, mul)                                             \
-       ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
-#define BEACON_RSSI(ahp)                                       \
-       HAL_EP_RND(ahp->stats.ast_nodestats.ns_avgbrssi,        \
-                  ATH9K_RSSI_EP_MULTIPLIER)
+#define BEACON_RSSI(ahp) (ahp->stats.ast_nodestats.ns_avgbrssi)

 
 #define ATH9K_ANI_OFDM_TRIG_HIGH          500
 #define ATH9K_ANI_OFDM_TRIG_LOW           200
 
 #define ATH9K_ANI_OFDM_TRIG_HIGH          500
 #define ATH9K_ANI_OFDM_TRIG_LOW           200