#!/bin/sh
# DF-5509 — mechanism proof (fallback / isolating variant):
# put the LIVE, fully-initialized driver into exactly the handler-visible
# pre-init state by zeroing sc_eintrs only (sc_offs stays CORRECT), then
# let one real port-change interrupt arrive (monitor: device_add usb-kbd).
# The stock handler path then demonstrates the mute behavior:
#   status = EHCI_STS_INTRS(EOREAD4(USBSTS))  != 0   (real PCD)
#   !(status & sc->sc_eintrs) -> goto done WITHOUT ack (ehci.c:1509-1511)
# -> permanent level-INTx live-lock.
set -e
kenv ehciarm.mode=1
kldload /root/ehciarm/ehciarm.ko
echo "== MUTED (sc_eintrs=0, sc_offs correct). Trigger: monitor device_add usb-kbd"