Index: head/sys/dev/usb/wlan/if_rum.c =================================================================== --- head/sys/dev/usb/wlan/if_rum.c +++ head/sys/dev/usb/wlan/if_rum.c @@ -2932,14 +2932,15 @@ { struct rum_softc *sc = ic->ic_softc; - RUM_LOCK(sc); - if (ic->ic_opmode != IEEE80211_M_AHDEMO) - rum_enable_tsf_sync(sc); - else - rum_enable_tsf(sc); - rum_set_bssid(sc, sc->sc_bssid); - RUM_UNLOCK(sc); - + if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) { + RUM_LOCK(sc); + if (ic->ic_opmode != IEEE80211_M_AHDEMO) + rum_enable_tsf_sync(sc); + else + rum_enable_tsf(sc); + rum_set_bssid(sc, sc->sc_bssid); + RUM_UNLOCK(sc); + } } static void