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Subject: Re: [PATCH] cardbus: Add a fixup hook and fix powerpc
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: linux-pci@vger.kernel.org,
       "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
       linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, blofeldus@yahoo.com,
       Olof Johansson <olof@lixom.net>
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	 <20091216140128.16afbeb7@jbarnes-piketon>
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Date: Thu, 17 Dec 2009 09:54:23 +1100
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On Wed, 2009-12-16 at 14:01 -0800, Jesse Barnes wrote:

> > Olof, once that's in you should be able to remove the hack you have in
> > the PA-Semi code to work around this.
> > 
> 
> Oops, looks like this fails for the modular case?  I get an unresolved
> symbol error when building this with my default config...
> 
> Care to resend with the fix against my for-linus branch?

Care to send a log ? I fail to see where the problem is since the patch
has:

--- linux-work.orig/drivers/pci/pci.c   2009-12-09 17:33:24.000000000 +1100
+++ linux-work/drivers/pci/pci.c        2009-12-09 17:34:16.000000000 +1100
@@ -2723,6 +2723,11 @@ int __attribute__ ((weak)) pci_ext_cfg_a
        return 1;
 }
 
+void __weak pci_fixup_cardbus(struct pci_bus *bus)
+{
+}
+EXPORT_SYMBOL(pci_fixup_cardbus);

Or is that broken in some way ?

I'm starting to regret trying to use weak stuff :-) I may turn it into a good
old:

#ifndef pcibios_fixup_cardbus
static inline void pcibios_fixup_cardbus(struct pci_bus *bus) { }
#define pcibios_fixup_cardbus
#endif

In a header and have ppc define it.

(And call it pcibios_ instead of pci_ which matches better what other arch
fixups are called :-)

Cheers,
Ben.