New vhba-1.0.0.ebuild with patches
This needs the two patches from here:
makefile.patch
scatterlist.patch
There are two more files you need to download from here in order to make this ebuild work:
cdemud.conf.d
cdemud.init.d

[code]# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
inherit linux-info linux-mod eutils
DESCRIPTION="VHBA module provides Virtual (SCSI) Host Bus Adapter \
for the cdemu suite"
HOMEPAGE="http://cdemu.org"
SRC_URI="mirror://sourceforge/cdemu/vhba-module-${PV}.tar.bz2"
LICENSE="GPL-V2"
SLOT="0"
KEYWORDS="~amd64 ~x86 ~hppa ~ppc"
IUSE=""
DEPEND=">=virtual/linux-sources-2.6.19"
RDEPEND=""
S="${WORKDIR}/vhba-module-${PV}"
MODULE_NAMES="vhba(block:${S})"
BUILD_TARGETS="clean modules"
pkg_setup() {
    CONFIG_CHECK="~BLK_DEV_SR ~CHR_DEV_SG"
    check_extra_config
}
src_unpack() {
    unpack ${A}
    cd ${S}
    einfo "Patching Makefile"
    epatch "${FILESDIR}"/makefile.patch || die "Failed to patch Makefile"
    if kernel_is 2 6 24 ; then
        einfo "Patching scatterlist"
        epatch "${FILESDIR}"/scatterlist.patch || die "Failed to patch scatterlist"
    fi
}
src_compile() {
    linux-mod_src_compile || die "Error: building module failed!"
}
src_install() {
    KV_OBJ="ko"
    linux-mod_src_install || die "Error: installing module failed!"
    UDEV_RULES="/etc/udev/rules.d/70-vhba.rules"
    einfo "Generating UDEV-rules ..."
    mkdir -p "${D}"/${UDEV_RULES%/*}
    echo -e "# do not edit this file, it will be overwritten on update\n#" \
    > "${D}"/${UDEV_RULES}
    echo -e "KERNEL==\"vhba_ctl\", NAME=\"%k\", MODE=\"0660\", OWNER=\"root\",GROUP=\"cdemu\"" >> "${D}"/${UDEV_RULES}
}
pkg_postinst() {
    einfo "Generating cdemu group ..."
    enewgroup cdemu
    elog "Don't forget to add yourself to the cdemu group "
    elog "if you want to be able to use virtual cdemu devices."
    linux-mod_pkg_postinst
}
pkg_postrm() {
    linux-mod_pkg_postrm
}[/code]