On 2019-02-28 09:03, Stanislaw Gruszka wrote: > set_tim callback is not used by mac80211 if AP_LINK_PS hw flag is set. > > Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx> There's a check in __sta_info_recalc_tim: /* No need to do anything if the driver does all */ if (ieee80211_hw_check(&local->hw, AP_LINK_PS) && !local->ops->set_tim) return; At the moment we need this dummy callback to ensure that the beacon TIM bits are set. - Felix