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    Subject[PATCH 4.18 015/168] mac80211: correct use of IEEE80211_VHT_CAP_RXSTBC_X
    Date
    4.18-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Danek Duvall <duvall@comfychair.org>

    [ Upstream commit 67d1ba8a6dc83d90cd58b89fa6cbf9ae35a0cf7f ]

    The mod mask for VHT capabilities intends to say that you can override
    the number of STBC receive streams, and it does, but only by accident.
    The IEEE80211_VHT_CAP_RXSTBC_X aren't bits to be set, but values (albeit
    left-shifted). ORing the bits together gets the right answer, but we
    should use the _MASK macro here instead.

    Signed-off-by: Danek Duvall <duvall@comfychair.org>
    Signed-off-by: Johannes Berg <johannes.berg@intel.com>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/mac80211/main.c | 5 +----
    1 file changed, 1 insertion(+), 4 deletions(-)

    --- a/net/mac80211/main.c
    +++ b/net/mac80211/main.c
    @@ -470,10 +470,7 @@ static const struct ieee80211_vht_cap ma
    cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
    IEEE80211_VHT_CAP_SHORT_GI_80 |
    IEEE80211_VHT_CAP_SHORT_GI_160 |
    - IEEE80211_VHT_CAP_RXSTBC_1 |
    - IEEE80211_VHT_CAP_RXSTBC_2 |
    - IEEE80211_VHT_CAP_RXSTBC_3 |
    - IEEE80211_VHT_CAP_RXSTBC_4 |
    + IEEE80211_VHT_CAP_RXSTBC_MASK |
    IEEE80211_VHT_CAP_TXSTBC |
    IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
    IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |

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