diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2008-09-24 13:57:46 +0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-09-24 16:18:04 -0400 |
| commit | 8d09a5e1c36d0dec5728e6c8b0bb5412de09b27b (patch) | |
| tree | 4e98dfc3181fb2feebc37de9b2d61451797b72e0 /drivers/net/wireless/iwlwifi/iwl-agn.c | |
| parent | 55d6a3cd0cc85ed90c39cf32e16f622bd003117b (diff) | |
| download | lwn-8d09a5e1c36d0dec5728e6c8b0bb5412de09b27b.tar.gz lwn-8d09a5e1c36d0dec5728e6c8b0bb5412de09b27b.zip | |
iwlwifi: don't fail if scan is issued too early
This patch returns success and empty scan on scans requests that were
rejected because issued too early. The cached bss list from previous
scanning will be returned by mac80211.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index d069549a01c2..7330890fd05e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -3190,9 +3190,9 @@ static void iwl4965_bss_info_changed(struct ieee80211_hw *hw, static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len) { - int ret; unsigned long flags; struct iwl_priv *priv = hw->priv; + int ret; IWL_DEBUG_MAC80211("enter\n"); @@ -3211,20 +3211,27 @@ static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len) goto out_unlock; } - /* we don't schedule scan within next_scan_jiffies period */ + /* We don't schedule scan within next_scan_jiffies period. + * Avoid scanning during possible EAPOL exchange, return + * success immediately. + */ if (priv->next_scan_jiffies && time_after(priv->next_scan_jiffies, jiffies)) { IWL_DEBUG_SCAN("scan rejected: within next scan period\n"); - ret = -EAGAIN; + queue_work(priv->workqueue, &priv->scan_completed); + ret = 0; goto out_unlock; } + /* if we just finished scan ask for delay */ if (iwl_is_associated(priv) && priv->last_scan_jiffies && time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) { IWL_DEBUG_SCAN("scan rejected: within previous scan period\n"); - ret = -EAGAIN; + queue_work(priv->workqueue, &priv->scan_completed); + ret = 0; goto out_unlock; } + if (ssid_len) { priv->one_direct_scan = 1; priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE); |