I am using raspbian jessie on raspberry pi 2. recently I wanted to apply PREEMPT-RT patch. I followed steps in that link https://www.raspberrypi.org/documentation/linux/kernel/building.md
However everything appears to be working fine except a freezing problem. Raspberry is freezing when running some jobs (for instance:
watch -n 1 date) and a wireless adapter is plugged in USB port.
removing wireless adapter, makes no freezing (I was able to keep it running for almost 1 week)
so my questions are
1- What does the error of pcm512x mean.
2- is pcm512x error causing this freezing problem