Hi Janusz,

[auto build test ERROR on wireless-drivers-next/master]
[also build test ERROR on v4.3 next-20151112]

url:    https://github.com/0day-ci/linux/commits/Janusz-Dziedzic/ath9k-add-debug-messages-to-aggr-chanctx-funcs/20151112-212004
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git master
config: i386-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/net/wireless/ath/ath9k/main.c: In function 'ath9k_add_interface':
>> drivers/net/wireless/ath/ath9k/main.c:1255:24: error: 'IEEE80211_VIF_GET_NOA_UPDATE' undeclared (first use in this function)
      vif->driver_flags |= IEEE80211_VIF_GET_NOA_UPDATE;
                           ^
   drivers/net/wireless/ath/ath9k/main.c:1255:24: note: each undeclared identifier is reported only once for each function it appears in

vim +/IEEE80211_VIF_GET_NOA_UPDATE +1255 drivers/net/wireless/ath/ath9k/main.c

  1249		}
  1250	
  1251		ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type);
  1252		sc->cur_chan->nvifs++;
  1253	
  1254		if (vif->type == NL80211_IFTYPE_STATION && ath9k_is_chanctx_enabled())
> 1255			vif->driver_flags |= IEEE80211_VIF_GET_NOA_UPDATE;
  1256	
  1257		if (ath9k_uses_beacons(vif->type))
  1258			ath9k_beacon_assign_slot(sc, vif);

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