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ath9k: Fix bug in retrieving average beacon rssi

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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>
This commit is contained in:
Vasanthakumar Thiagarajan 2009-08-20 13:41:14 +05:30 committed by John W. Linville
parent 035d0243eb
commit ff36041652
1 changed files with 1 additions and 6 deletions
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7
drivers/net/wireless/ath/ath9k/ani.h
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@ -18,15 +18,10 @@
#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 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