madwifi problems

duckdown@airfoil:~/madwifi-ng$ make
Checking requirements... ok.
Checking kernel configuration... ok.
mkdir -p ./symbols
for i in ./ath_hal ./net80211 ath_rate/sample ./ath; do \
        make -C $i || exit 1; \
done
make[1]: Entering directory `/home/duckdown/madwifi-ng/ath_hal'
make -C /lib/modules/2.6.12-9-386/build SUBDIRS=/home/duckdown/madwifi-ng/ath_hal MODVERDIR=/home/duckdown/madwifi-ng/ath_hal/../symbols modules
make[2]: Entering directory `/usr/src/linux-headers-2.6.12-9-386'
  Building modules, stage 2.
  MODPOST
Warning: could not find /home/duckdown/madwifi-ng/ath_hal/.hal.o.cmd for /home/duckdown/madwifi-ng/ath_hal/hal.o
make[2]: Leaving directory `/usr/src/linux-headers-2.6.12-9-386'
make[1]: Leaving directory `/home/duckdown/madwifi-ng/ath_hal'
make[1]: Entering directory `/home/duckdown/madwifi-ng/net80211'
make -C /lib/modules/2.6.12-9-386/build SUBDIRS=/home/duckdown/madwifi-ng/net80211 MODVERDIR=/home/duckdown/madwifi-ng/net80211/../symbols modules
make[2]: Entering directory `/usr/src/linux-headers-2.6.12-9-386'
  CC [M]  /home/duckdown/madwifi-ng/net80211/if_media.o
cc1: warnings being treated as errors
In file included from include/linux/if_ether.h:107,
                 from include/linux/netdevice.h:29,
                 from /home/duckdown/madwifi-ng/net80211/if_media.c:58:
include/linux/skbuff.h: In function 'skb_add_data':
include/linux/skbuff.h:1067: warning: pointer targets in passing argument 1 of 'csum_and_copy_from_user' differ in signedness
make[3]: *** [/home/duckdown/madwifi-ng/net80211/if_media.o] Error 1
make[2]: *** [_module_/home/duckdown/madwifi-ng/net80211] Error 2
make[2]: Leaving directory `/usr/src/linux-headers-2.6.12-9-386'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/duckdown/madwifi-ng/net80211'
make: *** [modules] Error 1
duckdown@airfoil:~/madwifi-ng$