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| author | Johannes Berg <johannes.berg@intel.com> | 2012-12-06 13:46:54 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2012-12-07 09:37:40 +0100 |
| commit | c8a8ab4472619e6936a224c5a950750d640aefbb (patch) | |
| tree | 9ecae1e0cabe4d98ff27fba521310170d169d9dd /drivers/net/wireless/iwlwifi | |
| parent | iwlwifi: reset_ict in stop_hw (diff) | |
| download | linux-c8a8ab4472619e6936a224c5a950750d640aefbb.tar.xz linux-c8a8ab4472619e6936a224c5a950750d640aefbb.zip | |
iwlwifi: change TX code to suppress smatch warning
By using a few temporary variables, smatch can track
what's happening and stops complaining that we access
beyond the tid_data array.
This also makes the generated code a bit smaller, so
it's a win all around.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/dvm/tx.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c index 7d6cc5dffc20..517562b90fda 100644 --- a/drivers/net/wireless/iwlwifi/dvm/tx.c +++ b/drivers/net/wireless/iwlwifi/dvm/tx.c @@ -305,7 +305,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, u8 hdr_len; u16 len, seq_number = 0; u8 sta_id, tid = IWL_MAX_TID_COUNT; - bool is_agg = false; + bool is_agg = false, is_data_qos = false; int txq_id; if (info->control.vif) @@ -378,9 +378,6 @@ int iwlagn_tx_skb(struct iwl_priv *priv, iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); } - if (info->flags & IEEE80211_TX_CTL_AMPDU) - is_agg = true; - dev_cmd = iwl_trans_alloc_tx_cmd(priv->trans); if (unlikely(!dev_cmd)) @@ -442,6 +439,10 @@ int iwlagn_tx_skb(struct iwl_priv *priv, hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); hdr->seq_ctrl |= cpu_to_le16(seq_number); seq_number += 0x10; + + if (info->flags & IEEE80211_TX_CTL_AMPDU) + is_agg = true; + is_data_qos = true; } /* Copy MAC header from skb into command buffer */ @@ -474,8 +475,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, if (iwl_trans_tx(priv->trans, skb, dev_cmd, txq_id)) goto drop_unlock_sta; - if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc) && - !ieee80211_has_morefrags(fc)) + if (is_data_qos && !ieee80211_has_morefrags(fc)) priv->tid_data[sta_id][tid].seq_number = seq_number; spin_unlock(&priv->sta_lock); |