#!/bin/sh
die() {
	echo "$@"
	exit 1
}

if [ -d /debug/dri ] ; then
	debugfs_path=/debug/dri
fi

if [ -d /sys/kernel/debug/dri ] ; then
	debugfs_path=/sys/kernel/debug/dri
fi

i915_dfs_path=x
for minor in `seq 0 16`; do
	if [ -f $debugfs_path/$minor/i915_error_state ] ; then
		i915_dfs_path=$debugfs_path/$minor
		break
	fi
done

if [ $i915_dfs_path = "x" ] ; then
	die " i915 debugfs path not found."
fi

# read everything we can
if [ `cat $i915_dfs_path/clients | wc -l` -gt "2" ] ; then
	die "ERROR: other drm clients running"
fi

i915_sfs_path=
if [ -d /sys/class/drm ] ; then
    sysfs_path=/sys/class/drm
    if [ -f $sysfs_path/card$minor/error ] ; then
	    i915_sfs_path="$sysfs_path/card$minor"
    fi
fi
# sysfs may not exist as the 'error' is a new interface in 3.11