diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 16998a0228180b46e2b56069591eaf7a010a95f5..dc985f73bcf72969a486e72e6fb8a7ccfa8d74e8 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2458,6 +2458,10 @@ 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;
 }