linux-kernel - Re: pci_device_id definition cleanups

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Message-ID: <20080216052737.GA18277@lixom.net>
Date:	Fri, 15 Feb 2008 23:27:38 -0600
From:	Olof Johansson <olof@...om.net>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Jonas Bonn <jonas@...thpole.se>, linux-kernel@...r.kernel.org
Subject: Re: pci_device_id definition cleanups

On Sat, Feb 16, 2008 at 03:23:36AM +0100, Sam Ravnborg wrote:
> On Sat, Feb 16, 2008 at 12:21:40AM +0100, Jonas Bonn wrote:
> > I've done some work on cleaning up the definitions of pci_device_id to
> > make them "static const" (where possible) and to make sure they go into
> > __devinitconst.  There are about 350 changes of the type shown in the
> > diff at the end of this mail.
> > 
> > ???All these changes are in my public GIT tree at:
> > 
> > git://www.southpole.se/~jonas/git/linux.git
> > 
> > (Based on 2.6.25-rc2)
> > 
> > In addition to these pci_device_id changes, there are a few changesets
> > that move "const" data from __devinitdata to __devinitconst.
> > 
> > The tree above builds with both allmodconfig and allyesconfig.
> 
> Hi Jonas.
> 
> Can I ask you to try the same with ARCH=powerpc
> (or alpha or ia64).
> Becasue it is for these architectures we see issues with
> defining data const.

I pulled his tree and tried building on powerpc w/ gcc 4.3, it passed.

I'm not too excited about the extremely long open-coded variable
definitions everywhere now though. Wouldn't it be better to just do a
macro for it?

Something like:

#define PCI_DEVICE_TABLE(_var) static const struct pci_device_id _var[] __devinitconst

And then just:

PCI_DEVICE_TABLE(mydevice_tbl) = {
	...
};


-Olof
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