I'm using rpi-4.13.y kernel plus raspberrypi-updated firmware (without kernel update).
Now Wifi connects fine on startup but we've got a couple of alternative wifi networks at work - If you connect to another one and give the correct network password, fine, maybe it works. If you give the WRONG one the driver fails. I start getting this at DMESG:
At this point I have to reboot to get the wifi to recover. Any ideas on this? Power management is off.