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| author | Johannes Berg <johannes.berg@intel.com> | 2010-10-07 04:00:33 -0700 |
|---|---|---|
| committer | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2010-10-14 09:47:35 -0700 |
| commit | 40bbfd4c1b336b8841bef9933b6e09252ace56b8 (patch) | |
| tree | 113aeddb212dba5d3db7b82d1d68f26a9e24f6e7 /drivers/net/wireless | |
| parent | 657e11a47dede79cae1d2f72084f6f7303aec725 (diff) | |
| download | linux-40bbfd4c1b336b8841bef9933b6e09252ace56b8.tar.gz | |
iwlagn: check beacon frame size
When the beacon_skb is NULL, we might still attempt to use it in this code path (if we ever get here) -- make the code a bit more defensive and check the return value of iwl_fill_beacon_frame() against zero. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 7079efbe34eb..c2636a7ab9ee 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -385,6 +385,8 @@ static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv, sizeof(frame->u) - sizeof(*tx_beacon_cmd)); if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE)) return 0; + if (!frame_size) + return 0; /* Set up TX command fields */ tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); |