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>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c
index 512d8beb3dfd..7745816eaff4 100644
--- 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");