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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Yinghai Lu <yinghai@kernel.org>,
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Subject: Re: [PATCH 3/3] PCI Hotplug: workaround for Thunderbolt on Intel DZ77RE-75K motherboard
Date: Thu, 13 Dec 2012 23:06:42 +0100
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In-Reply-To: <20121213204953.GA25085@otc-wbsnb-06>
References: <1355412708-20046-1-git-send-email-kirill.shutemov@linux.intel.com> <CA+55aFwxmhcgORCnDKwcp5EuzvC0iz02O4QR3H_stTXDbprYSA@mail.gmail.com> <20121213204953.GA25085@otc-wbsnb-06>
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On Thursday, December 13, 2012 10:49:53 PM Kirill A. Shutemov wrote:
> On Thu, Dec 13, 2012 at 12:30:04PM -0800, Linus Torvalds wrote:
> > On Thu, Dec 13, 2012 at 12:25 PM, Yinghai Lu <yinghai@kernel.org> wrote:
> > >
> > > Linus will not be happy with those kind of delay.
> > 
> > Indeed. And the DMI check is bogus too, since the "there can be
> > delays" is apparently part of the pcie hotplug spec.
> 
> It's ACPI PCI hotplug, not PCIe native hotplug. PCIe hotplug spec is not
> relevant.
> 
> IIUC, in ACPI case devices should be ready to be enumerated, before you
> get notification. Rafael, is it correct?

Not necessarily.  The ACPI nodes will be, the device themselves are still PCI
devices. :-)

Thanks,
Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.