linux-kernel - Re: [Alternative 2][PATCH] ACPI / PCI: Set root bridge ACPI handle in advance

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Date:	Fri, 4 Jan 2013 17:36:55 -0700
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Tony Luck <tony.luck@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>, Jiang Liu <liuj97@...il.com>,
	Myron Stowe <myron.stowe@...hat.com>
Subject: Re: [Alternative 2][PATCH] ACPI / PCI: Set root bridge ACPI handle in advance

On Fri, Jan 4, 2013 at 5:19 PM, Yinghai Lu <yinghai@...nel.org> wrote:
> On Fri, Jan 4, 2013 at 4:14 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
>> On Friday, January 04, 2013 04:03:01 PM Yinghai Lu wrote:
>>> On Fri, Jan 4, 2013 at 3:38 AM, Rafael J. Wysocki <rjw@...k.pl> wrote:
>>> >> --- a/arch/x86/include/asm/pci.h
>>> >> +++ b/arch/x86/include/asm/pci.h
>>> >> @@ -14,6 +14,7 @@
>>> >>  struct pci_sysdata {
>>> >>       int             domain;         /* PCI domain */
>>> >>       int             node;           /* NUMA node */
>>> >> +     void            *acpi_handle;
>>> >>  #ifdef CONFIG_X86_64
>>> >>       void            *iommu;         /* IOMMU private data */
>>> >>  #endif
>>> >>
>>>
>>> acpi_handle is not good name and it is confusing.
>>
>> Well, what would be a better name in your opinion?
>>
>> I was going to put that into a #ifdef CONFIG_ACPI / #endif, so what about
>> calling it acpi_data?
>
> yes, with #ifdef, you can use acpi_handle type directly.
>
> it is acpi handle for pci_root.
>
> so would call int pci_root_acpi_handle ?

I just copied the name from the corresponding ia64 code.  I don't care
if you want to change it, but I think there is *some* value in keeping
the x86 and ia64 code as similar as possible because it would be nice
to converge it some day.

Bjorn
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