Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 63ded3f0 authored by Felix Fietkau's avatar Felix Fietkau Committed by John W. Linville
Browse files

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: default avatarFelix Fietkau <nbd@openwrt.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent c32e4e51

drivers/net/wireless/ath/ath9k/beacon.c

+4 −3
Original line number Diff line number Diff line
@@ -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);