Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[safe/jmp/linux-2.6] / drivers / net / wireless / iwlwifi / iwl-core.c

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 5a7eca8..426e955 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -854,6 +854,45 @@ void iwl_set_rxon_chain(struct iwl_priv *priv)
 }
 EXPORT_SYMBOL(iwl_set_rxon_chain);
 
+/* Return valid channel */
+u8 iwl_get_single_channel_number(struct iwl_priv *priv,
+                                 enum ieee80211_band band)
+{
+       const struct iwl_channel_info *ch_info;
+       int i;
+       u8 channel = 0;
+
+       /* only scan single channel, good enough to reset the RF */
+       /* pick the first valid not in-use channel */
+       if (band == IEEE80211_BAND_5GHZ) {
+               for (i = 14; i < priv->channel_count; i++) {
+                       if (priv->channel_info[i].channel !=
+                           le16_to_cpu(priv->staging_rxon.channel)) {
+                               channel = priv->channel_info[i].channel;
+                               ch_info = iwl_get_channel_info(priv,
+                                       band, channel);
+                               if (is_channel_valid(ch_info))
+                                       break;
+                       }
+               }
+       } else {
+               for (i = 0; i < 14; i++) {
+                       if (priv->channel_info[i].channel !=
+                           le16_to_cpu(priv->staging_rxon.channel)) {
+                                       channel =
+                                               priv->channel_info[i].channel;
+                                       ch_info = iwl_get_channel_info(priv,
+                                               band, channel);
+                                       if (is_channel_valid(ch_info))
+                                               break;
+                       }
+               }
+       }
+
+       return channel;
+}
+EXPORT_SYMBOL(iwl_get_single_channel_number);
+
 /**
  * iwl_set_rxon_channel - Set the phymode and channel values in staging RXON
  * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz