linux-kernel - Re: post 2.6.26 requires pciehp_slot_with

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Message-ID: <20080724223920.1f4dd753@mjolnir.drzeus.cx>
Date:	Thu, 24 Jul 2008 22:39:20 +0200
From:	Pierre Ossman <drzeus-list@...eus.cx>
To:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org
Subject: Re: post 2.6.26 requires pciehp_slot_with_bus

On Thu, 24 Jul 2008 21:38:32 +0900
Kenji Kaneshige <kaneshige.kenji@...fujitsu.com> wrote:

> Hi Pierre,
> (Added linux-pci to CC)
> 
> Pierre Ossman wrote:
> > Somewhere post 2.6.26, pciehp started whining about not being able to
> > claim the slot and error code -17. It suggested adding
> > "pciehp_slot_with_bus", which actually helped. Still, having a kernel
> > parameter should just be a temporary fix.
> 
> The "pciehp_slot_with_bus" option is a workaround for the platforms
> that assign the same physical slot number to multiple slots. If your
> system has PCI chassis and it supports Chassis Number registers,
> maybe one of the solution is using chassis number + slot number as a
> slot name. But I don't have any idea other than "pciehp_slot_with_bus"
> if your system doesn't support chassis number.
> 

The what now? :)

This is a laptop with a single expressport that worked fine up until
this merge window. What changed and why is it no longer possible to
support this hardware without a kernel parameter?

Rgds
-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  rdesktop, core developer          http://www.rdesktop.org

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