On ARM, both pci and soc path can be tested for drm.
With this patchset, that was missing in recent kernel,
the tegra_drm case is not needed anymore:
http://patchwork.ozlabs.org/patch/361765/
http://www.spinics.net/lists/linux-tegra/msg17948.html
# as we could e.g. be in the installer; nokmsboot boot parameter will disable
# loading of the driver if needed
if [[ $hostonly ]] && modinfo -F alias $_modname | sed -e 's,\?,\.,g' -e 's,\*,\.\*,g' \
- | grep -qxf - /sys/bus/pci/devices/*/modalias 2>/dev/null; then
+ | grep -qxf - /sys/bus/{pci/devices,soc/devices/soc?}/*/modalias 2>/dev/null; then
hostonly='' instmods $_modname
continue
fi