From 5c2207c64209be2fe0d6b43ada2e41b28a948015 Mon Sep 17 00:00:00 2001 From: Wey-Yi Guy Date: Tue, 17 Mar 2009 21:51:43 -0700 Subject: [PATCH] iwlwifi: return 0 for AMPDU_TX/RX_STOP request if NIC is going down When receive IEEE80211_AMPDU_RX_STOP or IEEE80211_AMPDU_TX_STOP request in iwl_mac_ampdu_action() from mac80211; check STATUS_EXIT_PENDING bit, if NIC is on the way out, then return 0 back to mac80211, this can prevent mac80211 report HW error incorrectly. Signed-off-by: Wey-Yi Guy Signed-off-by: Reinette Chatre Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 4d2ed52af160..c1482852ea41 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -2683,6 +2683,7 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u16 tid, u16 *ssn) { struct iwl_priv *priv = hw->priv; + int ret; IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n", sta->addr, tid); @@ -2696,13 +2697,21 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw, return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn); case IEEE80211_AMPDU_RX_STOP: IWL_DEBUG_HT(priv, "stop Rx\n"); - return iwl_sta_rx_agg_stop(priv, sta->addr, tid); + ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid); + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return 0; + else + return ret; case IEEE80211_AMPDU_TX_START: IWL_DEBUG_HT(priv, "start Tx\n"); return iwl_tx_agg_start(priv, sta->addr, tid, ssn); case IEEE80211_AMPDU_TX_STOP: IWL_DEBUG_HT(priv, "stop Tx\n"); - return iwl_tx_agg_stop(priv, sta->addr, tid); + ret = iwl_tx_agg_stop(priv, sta->addr, tid); + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return 0; + else + return ret; default: IWL_DEBUG_HT(priv, "unknown\n"); return -EINVAL;