iwlwifi: disable FAT channel when not permitted
This patch disables FAT channel when it is not permitted according to
the EEPROM.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 010085a..c9bbfbb 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -486,6 +486,25 @@
if (ch->flags & EEPROM_CHANNEL_RADAR)
geo_ch->flags |= IEEE80211_CHAN_RADAR;
+ switch (ch->fat_extension_channel) {
+ case HT_IE_EXT_CHANNEL_ABOVE:
+ /* only above is allowed, disable below */
+ geo_ch->flags |= IEEE80211_CHAN_NO_FAT_BELOW;
+ break;
+ case HT_IE_EXT_CHANNEL_BELOW:
+ /* only below is allowed, disable above */
+ geo_ch->flags |= IEEE80211_CHAN_NO_FAT_ABOVE;
+ break;
+ case HT_IE_EXT_CHANNEL_NONE:
+ /* fat not allowed: disable both*/
+ geo_ch->flags |= (IEEE80211_CHAN_NO_FAT_ABOVE |
+ IEEE80211_CHAN_NO_FAT_BELOW);
+ break;
+ case HT_IE_EXT_CHANNEL_MAX:
+ /* both above and below are permitted */
+ break;
+ }
+
if (ch->max_power_avg > priv->max_channel_txpower_limit)
priv->max_channel_txpower_limit =
ch->max_power_avg;
