linux-kernel - Re: hotplug create

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Message-ID: <20080906215041.GD27298@ldl.fc.hp.com>
Date:	Sat, 6 Sep 2008 15:50:41 -0600
From:	Alex Chiang <achiang@...com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	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

* 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?

Thanks.

/ac

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