iwlagn: Sanity check for 11n capability

Make sure when we say 11n enable, we really support it.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c
index 512d8be..7745816 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c
@@ -113,6 +113,11 @@ int iwl_eeprom_check_sku(struct iwl_priv *priv)
        if (!priv->cfg->sku) {
                /* not using sku overwrite */
                priv->cfg->sku = iwl_eeprom_query16(priv, EEPROM_SKU_CAP);
+               if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE &&
+                   !priv->cfg->ht_params) {
+                       IWL_ERR(priv, "Invalid 11n configuration\n");
+                       return -EINVAL;
+               }
        }
        if (!priv->cfg->sku) {
                IWL_ERR(priv, "Invalid device sku\n");