linux-kernel - Re: [PATCH] cardbus: Add a fixup hook and fix powerpc

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Date:	Thu, 17 Dec 2009 09:54:23 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	linux-pci@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	blofeldus@...oo.com, Olof Johansson <olof@...om.net>
Subject: Re: [PATCH] cardbus: Add a fixup hook and fix powerpc

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.


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