diff options
| -rw-r--r-- | net/mac80211/tx.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 3fb04a86444..f336cc731df 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -409,8 +409,24 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx) sta->sta.addr); } #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ - clear_sta_flags(sta, WLAN_STA_PSPOLL); + if (test_and_clear_sta_flags(sta, WLAN_STA_PSPOLL)) { + /* + * The sleeping station with pending data is now snoozing. + * It queried us for its buffered frames and will go back + * to deep sleep once it got everything. + * + * inform the driver, in case the hardware does powersave + * frame filtering and keeps a station blacklist on its own + * (e.g: p54), so that frames can be delivered unimpeded. + * + * Note: It should be save to disable the filter now. + * As, it is really unlikely that we still have any pending + * frame for this station in the hw's buffers/fifos left, + * that is not rejected with a unsuccessful tx_status yet. + */ + info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; + } return TX_CONTINUE; } |