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SubjectRe: [patch 2/2] 8250_pnp: register x86 COM ports at the conventional ttyS names
Rene Herman wrote:
>
> The number of places expected to contain something sensible should I
> believe first be verified at 0x410 -- the equipment word. Bits 11-9
> (0x0e00) should be the number of serial ports, 0 to 4 (so 5-7 is also a
> sanity check) and if BIOSes can be expected to zero out the non-used
> base-addresses (at 0x400, 0x402, 0x404, 0x406) that's another sanity
> check. Don't know if they can though...
>

Probably not. However, the ports marked valid should be nonzero and
aligned-8.

-hpa



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