Comment 5 for bug 1600624

Issue is in 4.7.0 too.

Wifi *may* stay working for fairly long periods (2-3 hours) in some lucky instances.

Tests performed:
1. unload/load brcmfmac module.
   Result : Interface is stuck in "Link is not ready"

2. suspend system and resume.
   Result : Interface is stuck in "Link is not ready"

3. unload brcmfmac module and suspend. After resume manually load the module again.
   Result : Interface is stuck in "Link is not ready"

4. Warm reboot of the system.
   Result : Interface is stuck in "Link is not ready"

5. Full shutdown and cold-boot.
   Result : Interface comes up as expected and works for some time.

Have not been able to look into activating debug-output from brcmfmac (module debug-parameter) yet.