| 1 | --- a/net80211/ieee80211_beacon.c |
| 2 | +++ b/net80211/ieee80211_beacon.c |
| 3 | @@ -476,6 +476,14 @@ ieee80211_beacon_update(struct ieee80211 |
| 4 | tie->tim_bitctl |= BITCTL_BUFD_MCAST; |
| 5 | else |
| 6 | tie->tim_bitctl &= ~BITCTL_BUFD_MCAST; |
| 7 | + |
| 8 | + /* WAR: on some platforms, a race condition between beacon |
| 9 | + * contents update and beacon transmission leads to beacon |
| 10 | + * data not being updated in time. For most fields this is |
| 11 | + * not critical, but for powersave it is. Work around this |
| 12 | + * by always remapping the beacon when the TIM IE changes. |
| 13 | + */ |
| 14 | + len_changed = 1; |
| 15 | } |
| 16 | |
| 17 | /* Whenever we want to switch to a new channel, we need to follow the |
| 18 | |
