linux-kernel - Re: Correct types for mod_devicetable.h (was: Re: m68k build failure)

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Date:	Mon, 3 Dec 2007 21:02:19 +1100
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Pierre Ossman <drzeus@...eus.cx>, Al Viro <viro@....linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sam Ravnborg <sam@...nborg.org>,
	Marcel Holtmann <marcel@...tmann.org>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	linux-arch@...r.kernel.org
Subject: Re: Correct types for mod_devicetable.h (was: Re: m68k build failure)

On Sunday 02 December 2007 22:22:31 Geert Uytterhoeven wrote:
> On Sat, 1 Dec 2007, Pierre Ossman wrote:
> > Yeah, that could work. Have a header with stuff like this:
> >
> > typedef u16 __attribute__((aligned(2))) aligned_u16;
> > typedef u32 __attribute__((aligned(4))) aligned_u32;
>
> I gave it a try:

This seems to turn a molehill into a mountain.

We can change that mod_devicetable.h at any time; it's not supposed to be a 
userspace API (the kernel build system doesn't count).

So, just insert two bits of padding in sdio_device_id and insert a comment 
saying "/* Explicit padding: works even if we're cross-compiling */".

Thanks,
Rusty.
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