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iwlwifi: comment that setting driver_data overrides info->control

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Using the driver_data area in ieee80211_tx_info which
resides in the CB overrides the info->control field.
Add a comment to prevent mistakes.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2012-06-07 14:23:06 +03:00 committed by Johannes Berg
parent 5bf9a89d9a
commit 1174173939
1 changed files with 1 additions and 0 deletions
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drivers/net/wireless/iwlwifi/dvm/tx.c
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@ -403,6 +403,7 @@ int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
info->driver_data[0] = ctx;
info->driver_data[1] = dev_cmd;
/* From now on, we cannot access info->control */
spin_lock(&priv->sta_lock);