hola propbe el metodo que dice al principio de bajar, extraer, y make install, bueno probe en mi compaq con tarjeta de red atheros ar5007, le puse el modprobe y nada no pasa nada as continuacion les dejo el procedimiento que hice , espero haverme salteado algo
wifislax fsam7440-0.4 # make
make -C /lib/modules/2.6.21.5/build SUBDIRS=/mnt/sda2/fsam7440-0.4 modules
make[1]: Entering directory `/usr/src/linux-2.6.21.5'
WARNING: Symbol version dump /usr/src/linux-2.6.21.5/Module.symvers
is missing; modules will have no dependencies and modversions.
CC [M] /mnt/sda2/fsam7440-0.4/fsam7440.o
Building modules, stage 2.
MODPOST 1 modules
CC /mnt/sda2/fsam7440-0.4/fsam7440.mod.o
LD [M] /mnt/sda2/fsam7440-0.4/fsam7440.ko
make[1]: Leaving directory `/usr/src/linux-2.6.21.5'
wifislax fsam7440-0.4 # make install
su -c "install -d /lib/modules/2.6.21.5/kernel/net/wireless/ && install -m 644 -c fsam7440.ko /lib/modules/2.6.21.5/kernel/net/wireless/ && /sbin/depmod -a"
wifislax fsam7440-0.4 # modprobe fsam7440