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From: Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
To: Bjorn Helgaas <bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	Li Shaohua <shaohua.li-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Len Brown <len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Adam Belay <ambx1-IBH0VoN/3vPQT0dZR+AlfA@public.gmane.org>,
	Andrew Grover
	<andy.grover-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Matthieu <castet.matthieu-GANU6spQydw@public.gmane.org>
Subject: Re: [PATCH/RFC 2/2]ACPI PNP driver
Date: Wed, 22 Sep 2004 20:29:04 +0100	[thread overview]
Message-ID: <1095881343.4514.40.camel@localhost.localdomain> (raw)
In-Reply-To: <200409221252.08427.bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>

On Mer, 2004-09-22 at 19:52, Bjorn Helgaas wrote:
> PNP currently depends on ISA.  ia64 doesn't set ISA.  So if you
> pull ACPI support out of serial/floppy/etc, those devices will
> stop working on ia64.  Are you planning to remove the ISA
> dependency?

Please be more precise. There are four kinds of "PnP" at least.
IEEE1394 (parallel PnP) and serial PnP are independant of ACPI.
BIOS PnP serves the same purpose and is replaced by the ACPI ability to
enumerate system devices. ISA PnP enumerates devices on legacy ISA
busses.

> Does PNP support hot-plug?  There are definitely ACPI devices

BIOS PnP supports some hotplug for laptop docking issues. It is a lot
more primitive than the ACPI layer. In addition it is strictly forbidden
on pain of nasty things occuring to use BIOS PnP and ACPI at the same
time.

Having both use the same kind of driver registration would be nice.



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  parent reply	other threads:[~2004-09-22 19:29 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-22  4:35 [PATCH/RFC 2/2]ACPI PNP driver Li Shaohua
     [not found] ` <1095827699.18437.139.camel-U5EdaLXB8smDugQYiPIPGdh3ngVCH38I@public.gmane.org>
2004-09-22 18:52   ` Bjorn Helgaas
     [not found]     ` <200409221252.08427.bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
2004-09-22 19:29       ` Alan Cox [this message]
     [not found]         ` <1095881343.4514.40.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2004-09-22 20:58           ` Bjorn Helgaas
2004-09-23  2:41       ` Li Shaohua
     [not found]         ` <1095907272.15681.17.camel-U5EdaLXB8smDugQYiPIPGdh3ngVCH38I@public.gmane.org>
2004-09-23 14:56           ` Bjorn Helgaas
     [not found]             ` <200409230856.14991.bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
2004-09-24  2:15               ` Li Shaohua

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