ipw3945: Unknown symbols ieee80211_1_1_13_XXX_YYY

I installed the latest linux-restricted-modules-2.6.15-21-686 in my Dell Inspiron E1505

I already tried ipw3945 by following the instructions in http://ipw3945.sf.net and it has worked.

However, in 2.6.15-21 this is the error I got:

[quote]
# modprobe -v ipw3945
insmod /lib/modules/2.6.15-21-686/kernel/net/ieee80211/ieee80211_crypt.ko
insmod /lib/modules/2.6.15-21-686/kernel/net/ieee80211/ieee80211.ko
install /sbin/modprobe --ignore-install ipw3945 ; sleep 0.5 ; /sbin/ipw3945d-$(uname -r) --quiet
insmod /lib/modules/2.6.15-21-686/kernel/drivers/net/wireless/ipw3945/ipw3945.ko
FATAL: Error inserting ipw3945 (/lib/modules/2.6.15-21-686/kernel/drivers/net/wireless/ipw3945/ipw3945.ko): Unknown symbol in module, or unknown parameter (see dmesg)
2006-04-23 16:06:48: ERROR: opening /sys/bus/pci/drivers/ipw3945:
No such file or directory (2)
2006-04-23 16:06:48: ERROR: Could not find Intel PRO/Wireless 3945ABG Network Connection
FATAL: Error running install command for ipw3945
[/quote]

This is the output logged in dmesg:

[quote]
# dmesg
...
[4295025.360000] ieee80211_crypt: registered algorithm 'NULL'
[4295025.362000] ieee80211: 802.11 data/management/control stack, git-1.1.7
[4295025.362000] ieee80211: Copyright (C) 2004-2005 Intel Corporation <email address hidden>
[4295025.389000] ipw3945: Unknown symbol ieee80211_1_1_13_set_geo
[4295025.389000] ipw3945: Unknown symbol ieee80211_1_1_13_get_channel_flags
[4295025.390000] ipw3945: Unknown symbol ieee80211_1_1_13_wx_get_encode
[4295025.390000] ipw3945: Unknown symbol ieee80211_1_1_13_wx_get_scan
[4295025.390000] ipw3945: Unknown symbol ieee80211_1_1_13_wx_set_encode
[4295025.390000] ipw3945: Unknown symbol ieee80211_1_1_13_wx_get_encodeext
[4295025.390000] ipw3945: Unknown symbol ieee80211_1_1_13_tx_frame
[4295025.390000] ipw3945: Unknown symbol ieee80211_1_1_13_channel_to_index
[4295025.390000] ipw3945: Unknown symbol ieee80211_1_1_13_rx_mgt
[4295025.391000] ipw3945: Unknown symbol ieee80211_1_1_13_wx_set_encodeext
[4295025.391000] ipw3945: Unknown symbol ieee80211_1_1_13_rx
[4295025.391000] ipw3945: Unknown symbol ieee80211_1_1_13_freq_to_channel
[4295025.391000] ipw3945: Unknown symbol alloc_ieee80211_1_1_13
[4295025.391000] ipw3945: Unknown symbol ieee80211_1_1_13_get_channel
[4295025.391000] ipw3945: Unknown symbol ieee80211_1_1_13_txb_free
[4295025.391000] ipw3945: Unknown symbol ieee80211_1_1_13_get_geo
[4295025.392000] ipw3945: Unknown symbol ieee80211_1_1_13_is_valid_channel
[4295025.392000] ipw3945: Unknown symbol free_ieee80211_1_1_13
[/quote]