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Commit ac56703e authored by Felix Fietkau's avatar Felix Fietkau Committed by John W. Linville
Browse files

ath9k: fix ad-hoc nexttbtt calculation 



rounding up the delta between last-beacon-tsf and tsf to intval is wrong
and can lead to misconfigured timers which breaks beacon transmission.
Fix this by adding intval and subtracting the offset of the tsf within the
current slot.

Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 5b68138e

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

+1 −1
Original line number Diff line number Diff line
@@ -654,7 +654,7 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc, 
			delta = (tsf - sc->beacon.bc_tstamp);

		else

			delta = (tsf + 1 + (~0U - sc->beacon.bc_tstamp));

		nexttbtt = tsf + roundup(delta, intval);

		nexttbtt = tsf + intval - (delta % intval);

	}



	ath_dbg(common, ATH_DBG_BEACON,