#!/bin/bash
# must be root to access extended PCI config space
if [ "$EUID" -ne 0 ]; then
echo "ERROR: $0 must be run as root"
exit 1
fi
for BDF in `lspci -d "*:*:*" | awk '{print $1}'`; do
# skip if it doesn't support ACS
setpci -v -s ${BDF} ECAP_ACS+0x6.w > /dev/null 2>&1
if [ $? -ne 0 ]; then
echo "${BDF} does not support ACS, skipping"
continue
fi
echo "Disabling ACS on ${BDF}"
setpci -v -s ${BDF} ECAP_ACS+0x6.w=0000
done
exit 0
