ath9k: Fix TSF Adjust usage

TSF adjust is needed only for AP mode when staggered beacons
are used. Since we support only a single interface in IBSS mode,
disable setting the TSF adjust register.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath9k/core.c b/drivers/net/wireless/ath9k/core.c
index c262ef279ff3..690f7c56af3d 100644
--- a/drivers/net/wireless/ath9k/core.c
+++ b/drivers/net/wireless/ath9k/core.c
@@ -534,7 +534,8 @@ int ath_vap_attach(struct ath_softc *sc,
         avp->av_opmode = opmode;
         avp->av_bslot = -1;
 
-        ath9k_hw_set_tsfadjust(sc->sc_ah, 1);
+        if (opmode == ATH9K_M_HOSTAP)
+                ath9k_hw_set_tsfadjust(sc->sc_ah, 1);
 
         sc->sc_vaps[if_id] = avp;
         sc->sc_nvaps++;