diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index a889fd66fc63190ec7f393ae8e64a6d117281267..fd9e5305e77fd263cb55ecb46ff08e6d06ca0935 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -63,6 +63,7 @@ enum ath_op_flags {
 	ATH_OP_PRIM_STA_VIF,
 	ATH_OP_HW_RESET,
 	ATH_OP_SCANNING,
+	ATH_OP_MULTI_CHANNEL,
 };
 
 enum ath_bus_type {
diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c
index 097207073cd44e6393e4dfa70cc1c0fe6068577f..e3127b52e1eeb8b32fbe2a9f55774762ea050561 100644
--- a/drivers/net/wireless/ath/ath9k/channel.c
+++ b/drivers/net/wireless/ath/ath9k/channel.c
@@ -150,8 +150,10 @@ ath_chanctx_send_vif_ps_frame(struct ath_softc *sc, struct ath_vif *avp,
 
 void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx)
 {
+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
 	struct ath_vif *avp;
 	bool active = false;
+	u8 n_active = 0;
 
 	if (!ctx)
 		return;
@@ -171,6 +173,17 @@ void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx)
 		}
 	}
 	ctx->active = active;
+
+	ath_for_each_chanctx(sc, ctx) {
+		if (!ctx->assigned || list_empty(&ctx->vifs))
+			continue;
+		n_active++;
+	}
+
+	if (n_active > 1)
+		set_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags);
+	else
+		clear_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags);
 }
 
 static bool