What little google offers about this particular iteration of this debug
msg ("asb100 0-002d: starting device update...") is essentially seen here:
and ends with a response to the OP's identical-to-my complaint, by
someone who sounds confident in the fix:
> You have enabled "I2C Bus debugging messages" (CONFIG_I2C_DEBUG_BUS) when
> configuring your kernel. Simply unselect this option and the messages will go away.
In light of this might someone be able to compile the kernel with this
I'd be happy to give it a quick test if the kernel will be compatible
with 4.2 beta 1 (if the modified kernel requires a newer BuC platform
it'd have to wait for me to do an upgrade).