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[PATCH] iwl4965: fix driver hang related to hardware scan

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This patch fix the following:
1. make sure we are not scanning before we call REPLY_RXON
2. set RXON_FILTER_ASSOC_MSK only after we receive association response
3. call scan abort on scan watchdog instead of restart

Signed-off-by: Mohamed Abbas <mabbas@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
mabbas 2007-10-25 17:15:43 +08:00 committed by John W. Linville
parent 702004b745
commit 052c4b9f0a
2 changed files with 21 additions and 5 deletions
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2
drivers/net/wireless/iwlwifi/iwl-4965.c
View File

@ -3870,7 +3870,7 @@ static void iwl4965_rx_reply_rx(struct iwl_priv *priv,
*/
case IEEE80211_STYPE_ASSOC_RESP:
case IEEE80211_STYPE_REASSOC_RESP:
if (network_packet && iwl_is_associated(priv)) {
if (network_packet) {
#ifdef CONFIG_IWLWIFI_HT
u8 *pos = NULL;
struct ieee802_11_elems elems;

24
drivers/net/wireless/iwlwifi/iwl4965-base.c
View File

@ -6845,8 +6845,9 @@ static void iwl_bg_scan_check(struct work_struct *data)
IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
"Scan completion watchdog resetting adapter (%dms)\n",
jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
queue_work(priv->workqueue, &priv->restart);
iwl_send_scan_abort(priv);
}
mutex_unlock(&priv->mutex);
}
@ -6942,7 +6943,7 @@ static void iwl_bg_request_scan(struct work_struct *data)
spin_unlock_irqrestore(&priv->lock, flags);
scan->suspend_time = 0;
scan->max_out_time = cpu_to_le32(600 * 1024);
scan->max_out_time = cpu_to_le32(200 * 1024);
if (!interval)
interval = suspend_time;
@ -7118,6 +7119,8 @@ static void iwl_bg_post_associate(struct work_struct *data)
mutex_lock(&priv->mutex);
iwl_scan_cancel_timeout(priv, 200);
conf = ieee80211_get_hw_conf(priv->hw);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
@ -7573,8 +7576,6 @@ static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
iwl_config_ap(priv);
else {
priv->staging_rxon.filter_flags |=
RXON_FILTER_ASSOC_MSK;
rc = iwl_commit_rxon(priv);
if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
iwl_rxon_add_station(
@ -7582,6 +7583,7 @@ static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
}
} else {
iwl_scan_cancel_timeout(priv, 100);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
iwl_commit_rxon(priv);
}
@ -7642,6 +7644,7 @@ static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
IWL_DEBUG_MAC80211("enter\n");
mutex_lock(&priv->mutex);
spin_lock_irqsave(&priv->lock, flags);
if (!iwl_is_ready_rf(priv)) {
@ -7680,6 +7683,7 @@ static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
out_unlock:
spin_unlock_irqrestore(&priv->lock, flags);
mutex_unlock(&priv->mutex);
return rc;
}
@ -7713,6 +7717,8 @@ static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
mutex_lock(&priv->mutex);
iwl_scan_cancel_timeout(priv, 100);
switch (cmd) {
case SET_KEY:
rc = iwl_update_sta_key_info(priv, key, sta_id);
@ -7903,8 +7909,18 @@ static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
spin_unlock_irqrestore(&priv->lock, flags);
/* we are restarting association process
* clear RXON_FILTER_ASSOC_MSK bit
*/
if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
iwl_scan_cancel_timeout(priv, 100);
priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
iwl_commit_rxon(priv);
}
/* Per mac80211.h: This is only used in IBSS mode... */
if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
IWL_DEBUG_MAC80211("leave - not in IBSS\n");
mutex_unlock(&priv->mutex);
return;