ath9k firmware version 1.4.0 goes to linux-firmware main package instead of linux-firmware-ath9k. The new firmware e.g. has proper support for hardware encryption. currently I bbappend FILES_${PN}-ath9k += " \ /lib/firmware/ath9k_htc/htc_7010-1.4.0.fw \ /lib/firmware/ath9k_htc/htc_9271-1.4.0.fw \ "
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=45ae1e9684b3fdc338b47dfe48935e2c128a5f72