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koreader/platform/kobo/disable-wifi.sh
NiLuJe 8fcc712c76
Kobo: Clara 2E fixes (#9559)
* Handle the power button input device
* Handle the charging LED properly
* Handle the new Wi-Fi chip properly
* Handle frontlight warmth adjustments
* Handle the battery gauge properly
* Bump base (a lot of third-party updates) [https://github.com/koreader/koreader-base/pull/1523]
* Bump android-luajit-launcher to match the LuaJIT update [https://github.com/koreader/android-luajit-launcher/pull/386]

Fix #9552 (many thanks to @Bartvelp for bearing with my stupid tests ;)).
2022-09-28 21:31:52 +02:00

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#!/bin/sh
# Disable wifi, and remove all modules.
# NOTE: Save our resolv.conf to avoid ending up with an empty one, in case the DHCP client wipes it on release (#6424).
cp -a "/etc/resolv.conf" "/tmp/resolv.ko"
old_hash="$(md5sum "/etc/resolv.conf" | cut -f1 -d' ')"
if [ -x "/sbin/dhcpcd" ]; then
env -u LD_LIBRARY_PATH dhcpcd -d -k "${INTERFACE}"
killall -q -TERM udhcpc default.script
else
killall -q -TERM udhcpc default.script dhcpcd
fi
# NOTE: dhcpcd -k waits for the signalled process to die, but busybox's killall doesn't have a -w, --wait flag,
# so we have to wait for udhcpc to die ourselves...
# NOTE: But if all is well, there *isn't* any udhcpc process or script left to begin with...
kill_timeout=0
while pkill -0 udhcpc; do
# Stop waiting after 5s
if [ ${kill_timeout} -ge 20 ]; then
break
fi
usleep 250000
kill_timeout=$((kill_timeout + 1))
done
new_hash="$(md5sum "/etc/resolv.conf" | cut -f1 -d' ')"
# Restore our network-specific resolv.conf if the DHCP client wiped it when releasing the lease...
if [ "${new_hash}" != "${old_hash}" ]; then
mv -f "/tmp/resolv.ko" "/etc/resolv.conf"
else
rm -f "/tmp/resolv.ko"
fi
wpa_cli -i "${INTERFACE}" terminate
[ "${WIFI_MODULE}" = "dhd" ] && wlarm_le -i "${INTERFACE}" down
ifconfig "${INTERFACE}" down
# Some sleep in between may avoid system getting hung
# (we test if a module is actually loaded to avoid unneeded sleeps)
if grep -q "^${WIFI_MODULE}" "/proc/modules"; then
usleep 250000
rmmod "${WIFI_MODULE}"
fi
# Handle dependencies, if any
WIFI_DEP_MOD=""
SKIP_SDIO_PWR_MODULE=""
case "${WIFI_MODULE}" in
"moal")
WIFI_DEP_MOD="mlan"
SKIP_SDIO_PWR_MODULE="1"
;;
esac
if [ -n "${WIFI_DEP_MOD}" ]; then
if grep -q "^${WIFI_DEP_MOD}" "/proc/modules"; then
usleep 250000
rmmod "${WIFI_DEP_MOD}"
fi
fi
if [ -n "${SKIP_SDIO_PWR_MODULE}" ]; then
usleep 250000
./luajit frontend/device/kobo/ntx_io.lua 208 0
else
if grep -q "^sdio_wifi_pwr" "/proc/modules"; then
# Handle the shitty DVFS switcheroo...
if [ -n "${CPUFREQ_DVFS}" ]; then
echo "0" >"/sys/devices/platform/mxc_dvfs_core.0/enable"
if [ -n "${CPUFREQ_CONSERVATIVE}" ]; then
echo "conservative" >"/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
else
echo "userspace" >"/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
cat "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq" >"/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed"
fi
fi
usleep 250000
rmmod sdio_wifi_pwr
fi
# Poke the kernel via ioctl on platforms without the dedicated power module...
if [ ! -e "/drivers/${PLATFORM}/wifi/sdio_wifi_pwr.ko" ]; then
usleep 250000
./luajit frontend/device/kobo/ntx_io.lua 208 0
fi
fi