4 files changed, 20 insertions, 3 deletions

diff --git a/drivers/net/wireless/hostap/hostap_common.h b/drivers/net/wireless/hostap/hostap_common.h
index 1a9610add695..feec70e68d4e 100644
--- a/drivers/net/wireless/hostap/hostap_common.h
+++ b/drivers/net/wireless/hostap/hostap_common.h
@@ -423,6 +423,7 @@ enum {
         PRISM2_PARAM_PRIVACY_INVOKED = 37,
         PRISM2_PARAM_TKIP_COUNTERMEASURES = 38,
         PRISM2_PARAM_DROP_UNENCRYPTED = 39,
+        PRISM2_PARAM_SCAN_CHANNEL_MASK = 40,
 };
 
 enum { HOSTAP_ANTSEL_DO_NOT_TOUCH = 0, HOSTAP_ANTSEL_DIVERSITY = 1,
diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c
index 7572050db32d..b4f7feb669ef 100644
--- a/drivers/net/wireless/hostap/hostap_hw.c
+++ b/drivers/net/wireless/hostap/hostap_hw.c
@@ -3374,6 +3374,7 @@ prism2_init_local_data(struct prism2_helper_functions *funcs, int card_idx,
                                    * cnfDbmAdjust, if available */
         local->auth_algs = PRISM2_AUTH_OPEN | PRISM2_AUTH_SHARED_KEY;
         local->sram_type = -1;
+        local->scan_channel_mask = 0xffff;
 #if defined(PRISM2_PCI) && defined(PRISM2_BUS_MASTER)
         local->bus_master_threshold_rx = GET_INT_PARM(bus_master_threshold_rx,
                                                       card_idx);
diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c
index e545ac9c1b10..4c236e7903f5 100644
--- a/drivers/net/wireless/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/hostap/hostap_ioctl.c
@@ -1664,7 +1664,8 @@ static int prism2_request_hostscan(struct net_device *dev,
         local = iface->local;
 
         memset(&scan_req, 0, sizeof(scan_req));
-        scan_req.channel_list = __constant_cpu_to_le16(local->channel_mask);
+        scan_req.channel_list = cpu_to_le16(local->channel_mask &
+                                            local->scan_channel_mask);
         scan_req.txrate = __constant_cpu_to_le16(HFA384X_RATES_1MBPS);
         if (ssid) {
                 if (ssid_len > 32)
@@ -1693,7 +1694,8 @@ static int prism2_request_scan(struct net_device *dev)
         local = iface->local;
 
         memset(&scan_req, 0, sizeof(scan_req));
-        scan_req.channel_list = __constant_cpu_to_le16(local->channel_mask);
+        scan_req.channel_list = cpu_to_le16(local->channel_mask &
+                                            local->scan_channel_mask);
         scan_req.txrate = __constant_cpu_to_le16(HFA384X_RATES_1MBPS);
 
         /* FIX:
@@ -2338,6 +2340,10 @@ static const struct iw_priv_args prism2_priv[] = {
           IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "drop_unencrypte" },
         { PRISM2_PARAM_DROP_UNENCRYPTED,
           0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getdrop_unencry" },
+        { PRISM2_PARAM_SCAN_CHANNEL_MASK,
+          IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "scan_channels" },
+        { PRISM2_PARAM_SCAN_CHANNEL_MASK,
+          0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "getscan_channel" },
 };
 
 
@@ -2699,6 +2705,10 @@ static int prism2_ioctl_priv_prism2_param(struct net_device *dev,
                 local->drop_unencrypted = value;
                 break;
 
+        case PRISM2_PARAM_SCAN_CHANNEL_MASK:
+                local->scan_channel_mask = value;
+                break;
+
         default:
                 printk(KERN_DEBUG "%s: prism2_param: unknown param %d\n",
                        dev->name, param);
@@ -2890,6 +2900,10 @@ static int prism2_ioctl_priv_get_prism2_param(struct net_device *dev,
                 *param = local->drop_unencrypted;
                 break;
 
+        case PRISM2_PARAM_SCAN_CHANNEL_MASK:
+                *param = local->scan_channel_mask;
+                break;
+
         default:
                 printk(KERN_DEBUG "%s: get_prism2_param: unknown param %d\n",
                        dev->name, *param);
diff --git a/drivers/net/wireless/hostap/hostap_wlan.h b/drivers/net/wireless/hostap/hostap_wlan.h
index 4b32e2e887ba..91beee50c9c9 100644
--- a/drivers/net/wireless/hostap/hostap_wlan.h
+++ b/drivers/net/wireless/hostap/hostap_wlan.h
@@ -680,7 +680,8 @@ struct local_info {
         char essid[MAX_SSID_LEN + 1];
         char name[MAX_NAME_LEN + 1];
         int name_set;
-        u16 channel_mask;
+        u16 channel_mask; /* mask of allowed channels */
+        u16 scan_channel_mask; /* mask of channels to be scanned */
         struct comm_tallies_sums comm_tallies;
         struct net_device_stats stats;
         struct proc_dir_entry *proc;