From: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date: Mon, 6 Jun 2011 23:28:54 +0000 (-0700)
Subject: iwlagn: Sanity check for 11n capability
X-Git-Tag: firefly_0821_release~3680^2~4429^2~12^2~42^2~423
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4f0642a6665d1f4dbf8ef472dd5620e7585357b9;p=firefly-linux-kernel-4.4.55.git

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 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");