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Date: Mon, 07 Jan 2008 16:13:11 -0800 From: "H. Peter Anvin" <hpa@...or.com> To: "David P. Reed" <dpreed@...d.com> CC: Rene Herman <rene.herman@...access.nl>, Bodo Eggert <7eggert@....de>, Christer Weinigel <christer@...nigel.se>, Ingo Molnar <mingo@...e.hu>, Alan Cox <alan@...rguk.ukuu.org.uk>, Paul Rolland <rol@...917.net>, Pavel Machek <pavel@....cz>, Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>, rol@...be.net Subject: Re: Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override. 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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