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From: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
To: Alex Chiang <achiang@hp.com>,
	Kristen Carlson Accardi <kristen.c.accardi@intel.com>,
	Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>,
	Greg KH <gregkh@suse.de>, Jesse Barnes <jbarnes@virtuousgeek.org>,
	Matthew Wilcox <matthew@wil.cx>, Gary Hade <garyhade@us.ibm.com>,
	warthog19@eaglescrag.net, rick.jones2@hp.com,
	linux-kernel@vger.kernel.org, linux-pci@atrey.karlin.mff.cuni.cz,
	linux-acpi@vger.kernel.org
Subject: Re: [PATCH 4/4] ACPI PCI slot detection driver
Date: Wed, 12 Mar 2008 20:33:00 +0900	[thread overview]
Message-ID: <47D7BF6C.3080306@jp.fujitsu.com> (raw)
In-Reply-To: <20080311191406.GB29344@ldl.fc.hp.com>

Hi Alex-san,

> On my machine, it is legal to evaluate S1F0._SUN independent of
> S1F0._STA because L001._INI has already been evaluated.
> 
> It would be helpful to know what Fujitsu's namespace looks like.
> If Fujitsu slot objects contain _STA and _INI, then I agree with
> Kenji-san -- I definitely need to check _STA before evaluating
> _SUN.

Thank you for explanation. Maybe I understood the summary of
implementation of HP firmware. But how to use or where to put _INI
method in the ACPI namespace never becomes reasonable reason why
your driver may ignore _STA before evaluating _SUN.

> But in any case, I think both HP and Fujitsu firmware are doing
> legal things -- neither firmware is breaking the spec.

My understanding of your explanation so far is:

- evaluating _SUN without checking _STA doesn't cause problem,
  from the view point of HP's implementation.
- some IBM machine is doing same as HP

I never think those are reasonable reasons why ignoring _STA
before evaluating _SUN is legal. Am I missing something?

> If one list is shorter than the other, then that should be the
> list to put in the kernel, and the default behavior should be
> "majority rule".

I don't want to consider "majority rule" before I understand why
ignoring _STA is legal.

Thanks,
Kenji Kaneshige


  reply	other threads:[~2008-03-12 11:34 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-29  0:23 [PATCH 0/4, v7] PCI, ACPI: Physical PCI slot objects Alex Chiang
2008-02-29  0:26 ` [PATCH 1/4] Remove path attribute from sgi_hotplug Alex Chiang
2008-03-03 18:48   ` Jesse Barnes
2008-03-03 18:54     ` Prarit Bhargava
2008-03-05  0:19       ` Alex Chiang
2008-02-29  0:27 ` [PATCH 2/4] Construct one fakephp slot per pci slot Alex Chiang
2008-02-29  0:28 ` [PATCH 3/4] Introduce pci_slot Alex Chiang
2008-03-01  5:24   ` Greg KH
2008-03-03 20:56     ` Alex Chiang
2008-03-04  5:58       ` Greg KH
2008-03-04 23:30   ` [PATCH 3/4, v8] " Alex Chiang
2008-02-29  0:29 ` [PATCH 4/4] ACPI PCI slot detection driver Alex Chiang
2008-03-01  5:25   ` Greg KH
2008-03-01 14:43     ` Matthew Wilcox
2008-03-04  5:49       ` Greg KH
2008-03-04 18:18         ` Jesse Barnes
2008-03-04 19:30           ` Greg KH
2008-03-04 20:02             ` Jesse Barnes
2008-03-04 20:12             ` Kristen Carlson Accardi
2008-03-04 23:09             ` Alex Chiang
2008-03-05  1:11               ` Kenji Kaneshige
2008-03-05 20:20                 ` Alex Chiang
2008-03-05 20:34                   ` Matthew Wilcox
2008-03-06  2:07                   ` Kenji Kaneshige
2008-03-11 13:10                   ` Kenji Kaneshige
2008-03-11 13:13                     ` [PATCH 3/(3+1)] " Kenji Kaneshige
2008-03-11 13:17                       ` Kenji Kaneshige
2008-03-11 13:19                     ` [PATCH 4/(3+1)] Add quirks for " Kenji Kaneshige
2008-03-11 13:28                     ` [PATCH 4/4] " Matthew Wilcox
2008-03-11 16:56                       ` Jesse Barnes
2008-03-12  5:51                         ` Kenji Kaneshige
2008-03-12  4:08                       ` Kenji Kaneshige
2008-03-11 18:04                     ` Kristen Carlson Accardi
2008-03-11 19:14                       ` Alex Chiang
2008-03-12 11:33                         ` Kenji Kaneshige [this message]
2008-03-13  3:24                           ` Alex Chiang
2008-03-14  2:16                             ` Gary Hade
2008-03-14  5:34                               ` Kenji Kaneshige
2008-03-18 20:49                                 ` Alex Chiang
2008-03-12 10:50                       ` Kenji Kaneshige
2008-03-11 23:34                     ` Kristen Carlson Accardi
2008-03-12 12:59                       ` Kenji Kaneshige
2008-03-04 22:58         ` Alex Chiang
2008-03-04 23:15           ` Greg KH
2008-03-04 23:46             ` Alex Chiang
2008-03-01  5:12 ` [PATCH 0/4, v7] PCI, ACPI: Physical PCI slot objects Greg KH
2008-03-03 23:35   ` Alex Chiang
2008-03-04  5:56     ` Greg KH
2008-03-25  4:13 [PATCH 0/4, v11] " Alex Chiang
2008-03-25  4:17 ` [PATCH 4/4] ACPI PCI slot detection driver Alex Chiang
2008-03-25  4:50   ` Kenji Kaneshige
2008-03-25 17:09 [PATCH 0/4, v12] PCI, ACPI: Physical PCI slot objects Alex Chiang
2008-03-25 17:14 ` [PATCH 4/4] ACPI PCI slot detection driver Alex Chiang

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