[openwrt/openwrt] mac80211: do not enable VHT in the default config on 2.4 GHz

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch openwrt-21.02:
https://git.openwrt.org/8e3b3fa577789d0d5e829688db38665c11d44e5f

commit 8e3b3fa577789d0d5e829688db38665c11d44e5f
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Wed Jun 2 07:45:31 2021 +0200

    mac80211: do not enable VHT in the default config on 2.4 GHz
    
    Some drivers advertise it, but it's not supported at the moment
    
    Reported-by: John Thomson <git at johnthomson.fastmail.com.au>
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
    (cherry-picked from commit 42a99b18ff23fa768a6ae5f1076f15cbfa494f24)
---
 package/kernel/mac80211/files/lib/wifi/mac80211.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/kernel/mac80211/files/lib/wifi/mac80211.sh b/package/kernel/mac80211/files/lib/wifi/mac80211.sh
index f5d4f2e90a..02eabd0506 100644
--- a/package/kernel/mac80211/files/lib/wifi/mac80211.sh
+++ b/package/kernel/mac80211/files/lib/wifi/mac80211.sh
@@ -70,7 +70,7 @@ BEGIN {
         if (channel) {
 		mode="NOHT"
 		if (ht) mode="HT20"
-		if (vht) mode="VHT80"
+		if (vht && band != "1:")) mode="VHT80"
 		if (he) mode="HE80"
 		if (he && band == "1:") mode="HE20"
                 sub("\\[", "", channel)