diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index dd6f3d8b015ee9d714200869dfe18d87b5d1bddf..aee27e4f761a9abd81e4ad018b7e533e70a8237e 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;
 }