Reload drivers for my intel wireless card automatically if it hangs (on suspend/resume)

iwl-reset.sh

#!/bin/sh

lock=/var/run/lock/iwl-reset.lock

fail_msg='iwlwifi 0000:00:00.0: Failed to load firmware chunk!'

do_reset='
echo "Resetting wifi..."
rmmod iwlmvm
rmmod iwlwifi
modprobe iwlwifi
modprobe iwlmvm
sleep 2
'

dmesg --kernel --notime --follow --level=err \
| while read msg; do
	if [ X"$msg" = X"$fail_msg" ]; then
		echo 'Wifi appears hung'
		flock -xn "$lock" -c "$do_reset" &
	fi
done

I could just always {un,re}load the driver on suspend/resume, but sometimes it actually comes back and doesn't need to be reset.