linux-kernel - Re: mapping PCI registers with write combining (and PAT on x86)...

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Message-ID: <20061213021807.GW4044@athena.road.mcmartin.ca>
Date:	Tue, 12 Dec 2006 21:18:07 -0500
From:	Kyle McMartin <kyle@...isc-linux.org>
To:	linux-kernel@...r.kernel.org
Subject: Re: mapping PCI registers with write combining (and PAT on x86)...

On Tue, Dec 12, 2006 at 02:05:32PM -0800, Roland Dreier wrote:
> 	#if defined(__mc68000__)
<snip>
> 	#warning What do we have to do here??
> 	#endif
> 		if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
> 				     vma->vm_end - vma->vm_start, vma->vm_page_prot))
> 			return -EAGAIN;
> 		return 0;
> 

Wow, that should probably take the cake for the ugliest snippet
of code in the kernel.

--Kyle
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