ath9k: disable the MIB interrupt if ANI is disabled

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index f7ef114..494456c 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1436,7 +1436,8 @@
 	if ((vif->type == NL80211_IFTYPE_STATION) ||
 	    (vif->type == NL80211_IFTYPE_ADHOC) ||
 	    (vif->type == NL80211_IFTYPE_MESH_POINT)) {
-		ah->imask |= ATH9K_INT_MIB;
+		if (ah->config.enable_ani)
+			ah->imask |= ATH9K_INT_MIB;
 		ah->imask |= ATH9K_INT_TSFOOR;
 	}