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iwlwifi: don't update TFD free counter for invalid station 

This patch makes sure that station table is not accessed
with invalid station id in 4965 TX response path

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Tomas Winkler 2008-10-23 23:48:50 -07:00 committed by John W. Linville
parent 3fd07a1e5a
commit ed7fafec5e
1 changed files with 2 additions and 2 deletions
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4
drivers/net/wireless/iwlwifi/iwl-4965.c
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@ -2236,7 +2236,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
tx_resp->failure_frame);
freed = iwl_tx_queue_reclaim(priv, txq_id, index);
if (qc)
if (qc && likely(sta_id != IWL_INVALID_STATION))
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (priv->mac80211_registered &&
@ -2244,7 +2244,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
ieee80211_wake_queue(priv->hw, txq_id);
}
if (qc)
if (qc && likely(sta_id != IWL_INVALID_STATION))
iwl_txq_check_empty(priv, sta_id, tid, txq_id);
if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))