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    Subject[PATCH 5.4 45/98] iwlwifi: mvm: write queue_sync_state only for sync
    Date
    From: Avraham Stern <avraham.stern@intel.com>

    [ Upstream commit 97cc16943f23078535fdbce4f6391b948b4ccc08 ]

    We use mvm->queue_sync_state to wait for synchronous queue sync
    messages, but if an async one happens inbetween we shouldn't
    clear mvm->queue_sync_state after sending the async one, that
    can run concurrently (at least from the CPU POV) with another
    synchronous queue sync.

    Signed-off-by: Johannes Berg <johannes.berg@intel.com>
    Fixes: 3c514bf831ac ("iwlwifi: mvm: add a loose synchronization of the NSSN across Rx queues")
    Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
    Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
    Link: https://lore.kernel.org/r/iwlwifi.20201107104557.51a3148f2c14.I0772171dbaec87433a11513e9586d98b5d920b5f@changeid
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
    index 01b26b3327b01..73b8bf0fbf16f 100644
    --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
    +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
    @@ -3069,6 +3069,9 @@ static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
    goto out_unlock;
    }

    + if (vif->type == NL80211_IFTYPE_STATION)
    + vif->bss_conf.he_support = sta->he_cap.has_he;
    +
    if (sta->tdls &&
    (vif->p2p ||
    iwl_mvm_tdls_sta_count(mvm, NULL) ==
    --
    2.27.0


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