From: Mordechay Goodstein <mordechay.goodstein@xxxxxxxxx>
The bits of Rx MCS Map in VHT capability were enumerated
with index transform - index i -> (i + 1) bit => nss i. BUG!
while it should be - index i -> (i + 1) bit => (i + 1) nss.
The bug was exposed in commit a53b2a0b1245 ("iwlwifi: mvm: implement VHT
extended NSS support in rs.c"), where iwlwifi started using the
function.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@xxxxxxxxx>
Fixes: b0aa75f0b1b2 ("ieee80211: add new VHT capability fields/parsing")
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
net/wireless/util.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index cf63b635afc0..33dbf7ee9b97 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1998,7 +1998,7 @@ int ieee80211_get_vht_max_nss(struct ieee80211_vht_cap *cap,
continue;
if (supp >= mcs_encoding) {
- max_vht_nss = i;
+ max_vht_nss = i + 1;
break;
}
}
--
2.20.1
