--- zzzz-none-000/linux-4.4.60/net/wireless/scan.c	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/net/wireless/scan.c	2021-02-04 17:41:59.000000000 +0000
@@ -982,6 +982,9 @@
 	u32 freq;
 	int channel_number = -1;
 
+	if (channel->band != IEEE80211_BAND_2GHZ)
+		return channel;
+
 	tmp = cfg80211_find_ie(WLAN_EID_DS_PARAMS, ie, ielen);
 	if (tmp && tmp[1] == 1) {
 		channel_number = tmp[2];