1. echo "blacklist ath5k" >> /etc/modprobe.d/blacklist
2. Download latest madwifi-hal from http://snapshots.madwifi.org/madwifi-hal-0.10.5.6/
3. Extract the tarball & go to extracted directory and install it with following commands:
install
modprobe ath_pci
modprobe ath_hal
4. Create or open a file named in the /etc/pm/config.d/config
Add following line: SUSPEND_MODULES="ath_pci"
5. Reboot it and then configure wireless interface in Yast2.