diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 70126518ad1624151fdf3d78939f75f9acb9debd..2a62d7d91519b4dff480b4ef3332ecf3748bbf6e 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2729,6 +2729,10 @@ static int ieee80211_get_tx_power(struct wiphy *wiphy,
 	else
 		*dbm = sdata->vif.bss_conf.txpower;
 
+	/* INT_MIN indicates no power level was set yet */
+	if (*dbm == INT_MIN)
+		return -EINVAL;
+
 	return 0;
 }