quoted

Surely if my console is at 230Kbits/sec then resuming it at a totally
different speed is going to break things for people even if it happens to
help XO debug ?

The console is not in high speed mode when we suspend. The original 
commit (b5b82df6) just assumes that if it is a NATSEMI device, we 
should set it to high speed mode at resume w/o checking if that 
was the mode we were in when we suspended.

Then hard coding is no improvement either. It needs to restore the mode
that was present at suspend.

I'll update the 8250 Maintainers entry I suppose, I seem to have been
landed it as part of tty 8)