linux-kernel - Re: m68k build failure

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Date:	Fri, 30 Nov 2007 18:55:16 +0100
From:	Adrian Bunk <bunk@...nel.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Al Viro <viro@....linux.org.uk>, drzeus@...eus.cx,
	geert@...ux-m68k.org, sam@...nborg.org, marcel@...tmann.org,
	linux-kernel@...r.kernel.org, Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: m68k build failure

On Thu, Nov 29, 2007 at 01:19:42PM -0800, Andrew Morton wrote:
> On Wed, 28 Nov 2007 09:28:56 +0000
> Al Viro <viro@....linux.org.uk> wrote:
> 
> > On Wed, Nov 28, 2007 at 01:00:56AM -0800, Andrew Morton wrote:
> > > > No the slightest. 12 seems like the correct, padded size. A size of 10 is just weird as the unpadded size is 9 bytes. Could you dump the __mod_sdio_device_table section so we can determine if it is cropped or just oddly padded.
> > > > 
> > > 
> > > err, I'd rather not.  I have no shortage of bugs to be going on with here.
> > > 
> > > http://userweb.kernel.org/~akpm/cross-compilers/ has the i386->m68k
> > > cross-compiler which I use.
> > 
> > Eh...  m68k has 16bit alignment for unsigned long.  
> > 
> > diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
> > --- a/include/linux/mod_devicetable.h
> > +++ b/include/linux/mod_devicetable.h
> > @@ -343,7 +343,8 @@ struct sdio_device_id {
> >  	__u8	class;			/* Standard interface or SDIO_ANY_ID */
> >  	__u16	vendor;			/* Vendor or SDIO_ANY_ID */
> >  	__u16	device;			/* Device ID or SDIO_ANY_ID */
> > -	kernel_ulong_t driver_data;	/* Data private to the driver */
> > +	kernel_ulong_t driver_data	/* Data private to the driver */
> > +		__attribute__((aligned(sizeof(kernel_ulong_t))));
> >  };
> >  
> >  /* SSB core, see drivers/ssb/ */
> 
> That works, but it's a bit obscure.
> 
> sdio_device_id didn't exist in 2.6.23 so we still have time to turn it into
> some saner layout.
> 
> Who owns this code, anwyay?

Rusty Russell (Cc'ed)


cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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