ath5k: Use generic EWMA library
Remove ath5k's private moving average implementation in favour of the generic
library version.
Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index 308b79e..2718136 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -25,6 +25,7 @@
#include <linux/io.h>
#include <linux/types.h>
+#include <linux/average.h>
#include <net/mac80211.h>
/* RX/TX descriptor hw structs
@@ -1102,7 +1103,7 @@
struct ath5k_nfcal_hist ah_nfcal_hist;
/* average beacon RSSI in our BSS (used by ANI) */
- struct ath5k_avg_val ah_beacon_rssi_avg;
+ struct ewma ah_beacon_rssi_avg;
/* noise floor from last periodic calibration */
s32 ah_noise_floor;
@@ -1315,27 +1316,4 @@
return retval;
}
-#define AVG_SAMPLES 8
-#define AVG_FACTOR 1000
-
-/**
- * ath5k_moving_average - Exponentially weighted moving average
- * @avg: average structure
- * @val: current value
- *
- * This implementation make use of a struct ath5k_avg_val to prevent rounding
- * errors.
- */
-static inline struct ath5k_avg_val
-ath5k_moving_average(const struct ath5k_avg_val avg, const int val)
-{
- struct ath5k_avg_val new;
- new.avg_weight = avg.avg_weight ?
- (((avg.avg_weight * ((AVG_SAMPLES) - 1)) +
- (val * (AVG_FACTOR))) / (AVG_SAMPLES)) :
- (val * (AVG_FACTOR));
- new.avg = new.avg_weight / (AVG_FACTOR);
- return new;
-}
-
#endif