Messages in this thread | | | Date | Mon, 07 Jan 2008 16:13:11 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [linux-kernel] Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override. |
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David P. Reed wrote: > > And actually, if I had looked at the /sys/bus/pnp definitions, rather > than /proc/ioports, I would have noticed that port 80 was part of a > PNP0C02 resource set. That means exactly one thing: ACPI says that > port 80 is NOT free to be used, for delays or anything else. > > This should make no difference here: it's just one more reason to stop > using port 80 for delays on modern machines. >
And shoot the designer of this particular microcontroller firmware.
-hpa
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