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    Subject[PATCH 4.19 119/131] staging: vt6656: Fix drivers TBTT timing counter.
    Date
    From: Malcolm Priestley <tvboxspy@gmail.com>

    commit 09057742af98a39ebffa27fac4f889dc873132de upstream.

    The drivers TBTT counter is not synchronized with mac80211 timestamp.

    Reorder the functions and use vnt_update_next_tbtt to do the final
    synchronize.

    Fixes: c15158797df6 ("staging: vt6656: implement TSF counter")
    Cc: stable <stable@vger.kernel.org>
    Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
    Link: https://lore.kernel.org/r/375d0b25-e8bc-c8f7-9b10-6cc705d486ee@gmail.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/staging/vt6656/main_usb.c | 9 ++++++---
    1 file changed, 6 insertions(+), 3 deletions(-)

    --- a/drivers/staging/vt6656/main_usb.c
    +++ b/drivers/staging/vt6656/main_usb.c
    @@ -740,12 +740,15 @@ static void vnt_bss_info_changed(struct
    vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
    TFTCTL_TSFCNTREN);

    - vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
    - conf->sync_tsf, priv->current_tsf);
    -
    vnt_mac_set_beacon_interval(priv, conf->beacon_int);

    vnt_reset_next_tbtt(priv, conf->beacon_int);
    +
    + vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
    + conf->sync_tsf, priv->current_tsf);
    +
    + vnt_update_next_tbtt(priv,
    + conf->sync_tsf, conf->beacon_int);
    } else {
    vnt_clear_current_tsf(priv);


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