commit 4f4d4088b05155d4904e29d5c00316395ce32f27
Author: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date:   Wed Feb 24 08:28:30 2010 -0800

    iwlwifi: add internal short scan support for 3945
    
    Add internal short scan support for 3945 NIC, This allows 3945 NIC
    to support radio reset request like the other series of NICs.
    
    Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
    Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index dd33251..252df12 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -2799,7 +2799,6 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 		.len = sizeof(struct iwl3945_scan_cmd),
 		.flags = CMD_SIZE_HUGE,
 	};
-	int rc = 0;
 	struct iwl3945_scan_cmd *scan;
 	struct ieee80211_conf *conf = NULL;
 	u8 n_probes = 0;
@@ -2827,7 +2826,6 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 	if (test_bit(STATUS_SCAN_HW, &priv->status)) {
 		IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests  "
 				"Ignoring second request.\n");
-		rc = -EIO;
 		goto done;
 	}
 
@@ -2862,7 +2860,7 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 		priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
 				     IWL_MAX_SCAN_SIZE, GFP_KERNEL);
 		if (!priv->scan) {
-			rc = -ENOMEM;
+			IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
 			goto done;
 		}
 	}
@@ -2905,7 +2903,9 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 			       scan_suspend_time, interval);
 	}
 
-	if (priv->scan_request->n_ssids) {
+	if (priv->is_internal_short_scan) {
+		IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
+	} else if (priv->scan_request->n_ssids) {
 		int i, p = 0;
 		IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
 		for (i = 0; i < priv->scan_request->n_ssids; i++) {
@@ -2952,13 +2952,20 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 		goto done;
 	}
 
-	scan->tx_cmd.len = cpu_to_le16(
+	if (!priv->is_internal_short_scan) {
+		scan->tx_cmd.len = cpu_to_le16(
 			iwl_fill_probe_req(priv,
 				(struct ieee80211_mgmt *)scan->data,
 				priv->scan_request->ie,
 				priv->scan_request->ie_len,
 				IWL_MAX_SCAN_SIZE - sizeof(*scan)));
-
+	} else {
+		scan->tx_cmd.len = cpu_to_le16(
+			iwl_fill_probe_req(priv,
+				(struct ieee80211_mgmt *)scan->data,
+				NULL, 0,
+				IWL_MAX_SCAN_SIZE - sizeof(*scan)));
+	}
 	/* select Rx antennas */
 	scan->flags |= iwl3945_get_antenna_flags(priv);
 
@@ -2980,8 +2987,7 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 	scan->len = cpu_to_le16(cmd.len);
 
 	set_bit(STATUS_SCAN_HW, &priv->status);
-	rc = iwl_send_cmd_sync(priv, &cmd);
-	if (rc)
+	if (iwl_send_cmd_sync(priv, &cmd))
 		goto done;
 
 	queue_delayed_work(priv->workqueue, &priv->scan_check,