diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-12-19 21:01:50 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-12-19 23:41:56 +0400 |
| commit | 63ded3f059f5c906fdef4b7f0663fb39c4d96c8e (patch) | |
| tree | ebeebc78a32e8e2511aa64a05ed20c7b22ead201 /drivers/net/wireless/ath/ath9k/beacon.c | |
| parent | c32e4e518f6642372c57ac9edbfb8274fa20c5e4 (diff) | |
| download | linux-63ded3f059f5c906fdef4b7f0663fb39c4d96c8e.tar.xz | |
ath9k: fix TSF offset precision issue
Dividing the beacon interval by ATH_BCBUF (8) truncates the result for
the default beacon interval of 100.
Fix the calculation by moving the division after conversion from TU to
microseconds.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/beacon.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/beacon.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c index accfb3b60daa..112aff720e13 100644 --- a/drivers/net/wireless/ath/ath9k/beacon.c +++ b/drivers/net/wireless/ath/ath9k/beacon.c @@ -279,13 +279,14 @@ static void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif) struct ath_common *common = ath9k_hw_common(sc->sc_ah); struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf; struct ath_vif *avp = (void *)vif->drv_priv; - u64 tsfadjust; + u32 tsfadjust; if (avp->av_bslot == 0) return; - tsfadjust = cur_conf->beacon_interval * avp->av_bslot / ATH_BCBUF; - avp->tsf_adjust = cpu_to_le64(TU_TO_USEC(tsfadjust)); + tsfadjust = cur_conf->beacon_interval * avp->av_bslot; + tsfadjust = TU_TO_USEC(tsfadjust) / ATH_BCBUF; + avp->tsf_adjust = cpu_to_le64(tsfadjust); ath_dbg(common, CONFIG, "tsfadjust is: %llu for bslot: %d\n", (unsigned long long)tsfadjust, avp->av_bslot); |