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iwlwifi: check scan request ie_len

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In mac80211 we always check both scan_req->ie and scan_req->ie_len
against zero before usage, in iwlwifi we should do the same.

Remove not needed "left -= ie_len" while at it.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2010-04-16 15:46:41 +02:00 committed by John W. Linville
parent a02a295680
commit eb2ec0fb3c
1 changed files with 3 additions and 3 deletions
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6
drivers/net/wireless/iwlwifi/iwl-scan.c
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@ -644,10 +644,10 @@ u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
if (WARN_ON(left < ie_len))
return len;
if (ies)
if (ies && ie_len) {
memcpy(pos, ies, ie_len);
len += ie_len;
left -= ie_len;
len += ie_len;
}
return (u16)len;
}