diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/dvm/scan.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/dvm/scan.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/scan.c b/drivers/net/wireless/intel/iwlwifi/dvm/scan.c index 2d38227dfdd2..a7e85c5c8c72 100644 --- a/drivers/net/wireless/intel/iwlwifi/dvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/dvm/scan.c @@ -626,7 +626,7 @@ static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) u8 active_chains; u8 scan_tx_antennas = priv->nvm_data->valid_tx_ant; int ret; - int scan_cmd_size = sizeof(struct iwl_scan_cmd) + + size_t scan_cmd_size = sizeof(struct iwl_scan_cmd) + MAX_SCAN_CHANNEL * sizeof(struct iwl_scan_channel) + priv->fw->ucode_capa.max_probe_length; const u8 *ssid = NULL; @@ -649,9 +649,15 @@ static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) "fail to allocate memory for scan\n"); return -ENOMEM; } + priv->scan_cmd_size = scan_cmd_size; + } + if (priv->scan_cmd_size < scan_cmd_size) { + IWL_DEBUG_SCAN(priv, + "memory needed for scan grew unexpectedly\n"); + return -ENOMEM; } scan = priv->scan_cmd; - memset(scan, 0, scan_cmd_size); + memset(scan, 0, priv->scan_cmd_size); scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; scan->quiet_time = IWL_ACTIVE_QUIET_TIME; |