linux-kernel - Re: [git pull] PCI changes for 2.6.30

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Message-ID: <20090406191636.GA2366@uranus.ravnborg.org>
Date:	Mon, 6 Apr 2009 21:16:36 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Alex Chiang <achiang@...com>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [git pull] PCI changes for 2.6.30

On Mon, Apr 06, 2009 at 09:19:31AM -0600, Alex Chiang wrote:
> * Sam Ravnborg <sam@...nborg.org>:
> > > 
> > > Reading through Documentation/PCI/pci.txt says that under
> > > CONFIG_HOTPLUG, __devinit should be a nop?
> > The documentation is not up-to-date in this respect.
> > 
> > Annotating a function __devinit will no matter the configuration
> > locate the code in a section named .devinit.text
> 
> Ok, I'll update the documentation.
> 
> > We then postprocess this section for illegal references using modpost.
> > 
> > The PCI_HOTPLUG code has often been troublesome with respect to these checks
> > as this code is only relevant if CONFIG_HOTPLUG is enabled
> > and will often not even be included in the kernel if not enabled.
> > This is true for pci_rescan_bus() for example.
> > 
> > And we would like to export these symbols too. But we do not allow exported
> > symbols to be annotated __devinit as this code will be blown away in some configurations.
> > 
> > So the correct solution which you also used in your patch is to tell
> > modpost to ignore references to *init sections from this specific funtion
> > as they are OK.
> 
> Does this count as an Acked-by?
If this is not too late - yes.

	Sam
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