ipw2200 : missing symbole ieee80211*

[cd1]

Hi,
modprobe ipw2200 return following errors :

ipw2200: Unknown symbol ieee80211_get_crypto_ops
ipw2200: Unknown symbol ieee80211_wx_set_encode
ipw2200: Unknown symbol ieee80211_wx_get_encode
ipw2200: Unknown symbol ieee80211_txb_free
ipw2200: Unknown symbol ieee80211_crypt_delayed_deinit
ipw2200: Unknown symbol ieee80211_wx_get_scan
ipw2200: Unknown symbol ieee80211_freq_to_channel
ipw2200: Unknown symbol ieee80211_rx
ipw2200: Unknown symbol ieee80211_channel_to_index
ipw2200: Unknown symbol ieee80211_rx_mgt
ipw2200: Unknown symbol ieee80211_get_geo
ipw2200: Unknown symbol free_ieee80211
ipw2200: Unknown symbol ieee80211_is_valid_channel
ipw2200: Unknown symbol alloc_ieee80211

However I installed ieee80211.