mac80211: util: don't warn on missing sband iftype data

The kernel currently floods the ringbuffer with warnings when adding a
mesh interface for a device not support HE 6GHz modes.

Return without warning in this case, as mesh_add_he_6ghz_cap_ie calls
ieee80211_ie_build_he_6ghz_cap regardless of the supported interface
modes.

Signed-off-by: David Bauer <[email protected]>

package/kernel/mac80211/patches/subsys/600-mac80211-util-don-t-warn-on-missing-sband-iftype-dat.patch

@@ -0,0 +1,28 @@
+From db6d1e942f5a2828e1245e16ceb997f537a2d1a4 Mon Sep 17 00:00:00 2001
+From: David Bauer <[email protected]>
+Date: Sat, 25 Jul 2020 01:43:26 +0200
+Subject: [PATCH] mac80211: util: don't warn on missing sband iftype data
+
+The kernel currently floods the ringbuffer with warnings when adding a
+mesh interface for a device not support HE 6GHz modes.
+
+Return without warning in this case, as mesh_add_he_6ghz_cap_ie calls
+ieee80211_ie_build_he_6ghz_cap regardless of the supported interface
+modes.
+
+Signed-off-by: David Bauer <[email protected]>
+---
+ net/mac80211/util.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/net/mac80211/util.c
++++ b/net/mac80211/util.c
+@@ -2875,7 +2875,7 @@ void ieee80211_ie_build_he_6ghz_cap(stru
+ 		return;
+ 
+ 	iftd = ieee80211_get_sband_iftype_data(sband, iftype);
+-	if (WARN_ON(!iftd))
++	if (!iftd)
+ 		return;
+ 
+ 	cap = le16_to_cpu(iftd->he_6ghz_capa.capa);