quoted

My particular uart resports (status1 == 6 && status2 == 6). If that is
good enough I can add another porttype and add the correct register
address as UART_EXAR_EFR in the header file.

Try it and see. We can put it in -next for a while and then there will a
release cycle duriing which any unfortunate clashes wil get resolved.

I will prepare and test a patch.

Alternatively if it's a device attached to a specific platform create it
as a platform device of some kind in the board specific code and pick
that up in the serial driver.

quoted

Another thought could be to write 0xFF (or some other value) to the
correct EFR-register and read that byte to test if the register is
present. The problem here is that I do not how the bus reacts to
writting/reading invalid addresses.

The trouble is an extra register may in fact be part of some other device
- it's generally not a great idea if there are other choices.

Ok. It did seem like a dangerous thing to do.

Thanks Alan

-- 
Søren Holm
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