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: Felix Fietkau <[email protected]>
---
drivers/net/wireless/ath/ath9k/beacon.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index c7f4679..0199af0 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -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,
--
1.7.3.2