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 2f659949e6e..61b501aae5e 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,