linux-kernel - Re: hotplug create

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Date:	Sat, 6 Sep 2008 15:18:28 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Alex Chiang" <achiang@...com>,
	"Yinghai Lu" <yhlu.kernel@...il.com>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"jbarnes@...tuousgeek.org" <jbarnes@...tuousgeek.org>
Subject: Re: hotplug create_slot hang

On Sat, Sep 6, 2008 at 2:50 PM, Alex Chiang <achiang@...com> wrote:
> * Yinghai Lu <yhlu.kernel@...il.com>:
>> calling  pci_hotplug_init+0x0/0x1d
>> pci_hotplug: PCI Hot Plug PCI Core version: 0.5
>> initcall pci_hotplug_init+0x0/0x1d returned 0 after 11 msecs
>>
>> calling  acpiphp_init+0x0/0x5f
>> acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
>> decode_hpp: Could not get hotplug parameters. Use defaults
>> pci_create_slot: created pci_slot on 0000:07:00
>> acpiphp: Slot [1] registered
>> decode_hpp: Could not get hotplug parameters. Use defaults
>> pci_create_slot: created pci_slot on 0000:0d:00
>> acpiphp: Slot [2] registered
>> initcall acpiphp_init+0x0/0x5f returned 0 after 105 msecs
>
> Is this the hang?
>
>> calling  pcied_init+0x0/0x7b
>> pciehp: HPC vendor_id 8086 device_id 340a ss_vid 0 ss_did 0
>> pci_create_slot: inc refcount to 2 on 0000:07:00
>> pci_destroy_slot: dec refcount to 1 on 0000:07:00
>> pciehp: pci_hp_register failed with error -16
>> pciehp: pciehp: slot already registered by another hotplug driver
>
> This failure is by design -- we only allow one hotplug driver to
> claim a slot now, and it's "first one loaded wins".
>
> Unless you're talking about something else?

after

pciehp: pciehp: slot already registered by another hotplug driver

never go on...

YH
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