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    Subject[PATCH 4.2 007/110] iwlwifi: mvm: clear csa countdown when AP is stopped
    Date
    4.2-stable review patch.  If anyone has any objections, please let me know.

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

    From: Avraham Stern <avraham.stern@intel.com>

    commit e9cb0327b26dd7ba43a3b7a05b4b62219decf42d upstream.

    The csa_countdown flag was not cleared when the AP is stopped.
    As a result, if the AP was stopped after csa_countdown had started,
    all the folowing channel switch commands would fail.
    Fix that by clearing the csa_countdown flag when the AP is stopped.

    Signed-off-by: Avraham Stern <avraham.stern@intel.com>
    Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/net/wireless/iwlwifi/mvm/mac80211.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
    +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
    @@ -2373,6 +2373,7 @@ static void iwl_mvm_stop_ap_ibss(struct
    iwl_mvm_remove_time_event(mvm, mvmvif,
    &mvmvif->time_event_data);
    RCU_INIT_POINTER(mvm->csa_vif, NULL);
    + mvmvif->csa_countdown = false;
    }

    if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {



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