Re: [linux-kernel] Re: [PATCH] x86: provide a DMI based port 0x80I/O delay override.

From: Rene Herman
Date: Wed Jan 09 2008 - 19:48:27 EST


On 10-01-08 01:37, Robert Hancock wrote:

David P. Reed wrote:

I have a small suggestion in mind that might be helpful in the future:
the "motherboard resources" discovered as PNP0C02 devices in their _CRS
settings in ACPI during ACPI PnP startup should be reserved (or
checked), and any drivers that still use port 80 implicitly should
reserve that port.

I agree. In this case the BIOS on these laptops is trying to tell us "port 80 is used for our purposes, do not touch it". We should be listening.

Listening is fine but what are you going to do after you have listened? Right, not use port 0x80 but since that's the current idea anyway outside of legacy drivers, you don't actually need to listen.

If the quirk-to-0xed or similar was to stay, it's a much better switching point than DMI strings but if not, it's not actually important.

Rene.
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