diff options
| author | Mordechay Goodstein <mordechay.goodstein@intel.com> | 2019-05-29 15:25:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-14 09:09:42 +0300 |
| commit | afe6a610dd5d82e93add11aaee1fb071d5b57a78 (patch) | |
| tree | 7950f9697450e3134944e41a719fe0ca4d597b9d /net | |
| parent | d2aab1140bd37e5bbfbc03152243701ff832d2ba (diff) | |
| download | linux-afe6a610dd5d82e93add11aaee1fb071d5b57a78.tar.xz | |
cfg80211: util: fix bit count off by one
[ Upstream commit 1a473d6092d5d182914bea854ce0b21e6d12519d ]
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@intel.com>
Fixes: b0aa75f0b1b2 ("ieee80211: add new VHT capability fields/parsing")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/wireless/util.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index 5a03f38788e7..5ac66a571e33 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1989,7 +1989,7 @@ 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; } } |