Something

bt madwifi-ng # patch -Np1 -i ../madwifi-ng-r2277.patch
patching file ath/if_ath.c
Hunk #1 succeeded at 1986 with fuzz 2 (offset -299 lines).
Hunk #2 succeeded at 2951 with fuzz 2 (offset 652 lines).
bt madwifi-ng # make
Checking requirements... ok.
Checking kernel configuration... ok.
make -C /lib/modules/2.6.20-BT-PwnSauce-NOSMP/build SUBDIRS=/root/madwifi-ng modules
make[1]: Entering directory `/usr/src/linux-2.6.20'
  CC [M]  /root/madwifi-ng/ath/if_ath.o
/root/madwifi-ng/ath/if_ath.c: In function `ath_intr':
/root/madwifi-ng/ath/if_ath.c:1989: warning: unused variable `ic'
/root/madwifi-ng/ath/if_ath.c: In function `ath_tx_startraw':
/root/madwifi-ng/ath/if_ath.c:2655: error: `ic' undeclared (first use in this function)
/root/madwifi-ng/ath/if_ath.c:2655: error: (Each undeclared identifier is reported only once
/root/madwifi-ng/ath/if_ath.c:2655: error: for each function it appears in.)
make[3]: *** [/root/madwifi-ng/ath/if_ath.o] Error 1
make[2]: *** [/root/madwifi-ng/ath] Error 2
make[1]: *** [_module_/root/madwifi-ng] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.20'
make: *** [modules] Error 2