Re: [patch 2/2] 8250_pnp: register x86 COM ports at the conventionalttyS names

[H. Peter Anvin]

Bodo Eggert wrote:
> BTW1: These addresses may be used to detect ports on non-standard addresses,
> but unfortunately they don't tell the IRQ.
>
> BTW2: When I submitted a patch using the BIOS data area, I was told that it
> might not exist on systems booting from non-PC firmware. This claim was not
> yet backed with any knowledge, nor did anybody suggest a way to detect this
> situation.

This is, of course, true.  It doesn't exactly help that some (most?) 
non-PC firmware at least mimic the BIOS data area.

In this particular case, there is some minor sanity-checking that can be 
done: the values should be nonzero and aligned 8.

	-hpa
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