reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git/commit/?id=e406eaaef9d5c80a3b7651fadc1a048659f18029
        git remote add ieee1394-linux1394 https://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git
        git fetch --no-tags ieee1394-linux1394 topic/packet-header-serdes
        git checkout e406eaaef9d5c80a3b7651fadc1a048659f18029
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/firewire/