| #! /bin/sh |
| |
| # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # This clears the persist flag for the LTE modem, and thus forces a power-cycle |
| # if the modem doesn't respond after autosuspend/resume. If we don't set |
| # avoid_reset_quirk, the persist flag is automatically set by the driver. |
| |
| ltedir="" |
| for d in /sys/bus/usb/devices/*; do |
| idProduct=$(cat "${d}/idProduct") |
| idVendor=$(cat "${d}/idVendor") |
| if [ "$idProduct" = "9010" -a "$idVendor" = "1410" ]; then |
| ltedir="${d}" |
| fi |
| done |
| |
| if [ -z "$ltedir" ]; then |
| logger "lte-quirks: could not find LTE modem" |
| exit 0 |
| fi |
| |
| echo 1 > "$ltedir/avoid_reset_quirk" || \ |
| logger "lte-quirks: could not set avoid_reset_quirk" |
| echo 0 > "$ltedir/power/persist" || \ |
| logger "lte-quirks: could not clear persist flag" |
