diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 5659af1bec17..77d8ed184c1c 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2452,6 +2452,10 @@ 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;
 }