iwlwifi: validate enhanced tx power entry

[pandora-kernel.git] / drivers / net / wireless / iwlwifi / iwl-eeprom.c

diff --git a/drivers/net/wireless/iwlwifi/iwl-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
index 8a0709e..143728c 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlwifi/iwl-eeprom.c
@@ -913,6 +913,16 @@ void iwlcore_eeprom_enhanced_txpower(struct iwl_priv *priv)
                enhanced_txpower = (struct iwl_eeprom_enhanced_txpwr *)
                                iwl_eeprom_query_addr(priv, offset);
 
+               /*
+                * check for valid entry -
+                * different version of EEPROM might contain different set
+                * of enhanced tx power table
+                * always check for valid entry before process
+                * the information
+                */
+               if (!enhanced_txpower->common || enhanced_txpower->reserved)
+                       continue;
+
                for (element = 0; element < eeprom_section_count; element++) {
                        if (enhinfo[section].is_common)
                                max_txpower_avg =