linux-kernel - Re: [PATCH 12/24] PCI, ia64: Register busn

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Date:	Tue, 28 Feb 2012 20:26:48 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Bjorn Helgaas <bhelgaas@...gle.com>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Tony Luck <tony.luck@...el.com>,
	David Miller <davem@...emloft.net>, x86 <x86@...nel.org>,
	Dominik Brodowski <linux@...inikbrodowski.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, Fenghua Yu <fenghua.yu@...el.com>,
	linux-ia64@...r.kernel.org
Subject: Re: [PATCH 12/24] PCI, ia64: Register busn_res for root buses

On Tue, Feb 28, 2012 at 4:22 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> On Tue, Feb 28, 2012 at 5:12 PM, Yinghai Lu <yinghai@...nel.org> wrote:
>>>
>>> Why do you add a new struct resource here?  Can't you just use the one
>>> passed in from acpi_pci_root_add()?
>>
>> not quite sure about the life cycle for that object.
>
> The struct acpi_pci_root is allocated in acpi_pci_root_add() and freed
> in acpi_pci_root_remove(), so it should be safe for PCI to use.

ok will change that for ia64.

>
> Same thing applies for x86, of course.

for x86, will have separate addon patch.

Thanks

      Yinghai
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