* Andy Shevchenko [off-list ref] [180516 13:12]:

On Wed, 2018-05-16 at 12:47 +0200, Sebastian Andrzej Siewior wrote:

quoted

But since I am on it. You have to enable runtime-PM for the UART. So
what is the problem if you simply don't enable it for the UART which
used as the kernel console?

How do I know at the ->probe() time that device in question is going to
be kernel console? Maybe I missed simple way of it.

Hmm parse the kernel cmdline maybe? :)

BTW, kernel already has earlycon doing exactly what you're trying to do.

Regards,

Tony