for BDF in `lspci -d "*:*:*" | awk '{print $1}'`; do
# skip if it doesn't support ACS
sudo setpci -v -s ${BDF} ECAP_ACS+0x6.w > /dev/null 2>&1
if [ $? -ne 0 ]; then
continue
fi
sudo setpci -v -s ${BDF} ECAP_ACS+0x6.w=0000
done